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Contents
- The climate of Berkeley
- The Best Time to Visit Berkeley
- The Worst Time to Visit Berkeley
- Spring Weather in Berkeley
- Summer Weather in Berkeley
- Autumn Weather in Berkeley
- Winter Weather in Berkeley
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
the neon-lit iconic Berkeley University Sather Tower in California
The climate of Berkeley
Located in the warm Mediterranean Koppen climate zone (Csb), Berkeley, California, experiences a mild and comfortable climate throughout the year. Characterized by warm dry summers and mild wet winters, weather conditions in Berkeley exhibit a clear seasonality.
Temperature patterns are steady, but they show a gradual swing throughout the year. Monthly average high temperatures peak at approximately 76.6°F (24.8°C) in September, while the coldest month is January with the lowest temperatures dropping to a mild 44.2°F (6.8°C). The monthly average lows range from 44.2°F (6.8°C) in January to 56.8°F (13.8°C) in September. Humidity levels present a minimal variation, with levels ranging from 64% in October to 75% in March.
Rainfall records indicate that the driest period ranges from June to September with a mere 0.08" (2mm) of rain, a stark contrast to the most substantial rainfall experienced in February at 1.1" (28mm). Sunshine is abundant, with the city experiencing average daylight hours between 9.6 hours in December and 14.8 hours in June. The annual cloud cover stays moderate, varying from a low 11% in July to a high of 36% in March.
Temperature patterns are steady, but they show a gradual swing throughout the year. Monthly average high temperatures peak at approximately 76.6°F (24.8°C) in September, while the coldest month is January with the lowest temperatures dropping to a mild 44.2°F (6.8°C). The monthly average lows range from 44.2°F (6.8°C) in January to 56.8°F (13.8°C) in September. Humidity levels present a minimal variation, with levels ranging from 64% in October to 75% in March.
Rainfall records indicate that the driest period ranges from June to September with a mere 0.08" (2mm) of rain, a stark contrast to the most substantial rainfall experienced in February at 1.1" (28mm). Sunshine is abundant, with the city experiencing average daylight hours between 9.6 hours in December and 14.8 hours in June. The annual cloud cover stays moderate, varying from a low 11% in July to a high of 36% in March.
The Best Time to Visit Berkeley
For tourists seeking to enjoy the best of Berkeley's pleasant climate, the duration from July to September comes highly recommended. Average high temperatures hover around pleasant levels, between 73.8°F (23.2°C) to 76.6°F (24.8°C). Rainfall is bare minimum with an average of 0.08" (2mm), and the city basks in an approximate 14 hours of daylight. Coupled with moderate wind speeds averaging 6.2mph (10km/h) to 6.5mph (10.5km/h), these conditions make it an excellent time for outdoor activities.
The Worst Time to Visit Berkeley
Berkeley experiences its most unfavourable weather conditions in the month of February. Although temperatures range from a reasonable 45°F (7.2°C) to 58.8°F (14.9°C), rainfall clocks a high of 1.1" (28mm) accompanied by seven days of raining. Additionally, compared to other months, February also has shorter daylight hours at 10.8 hours and lower sunshine duration at 6.2 hours.
Spring Weather in Berkeley
Berkeley transitions into Spring from March to May under relatively mild temperatures. Monthly average temperatures rise steadily, from 60.8°F (16°C) in March to 68°F (20°C) by May, while lows remain above 46.4°F (8°C). Humidity levels drop marginally from 75% in March to 70% in May. Rainfall decreases significantly from 0.71" (18mm) in March to 0.28" (7mm) in May while daily sunshine duration improves, reaching up to 10.7 hours by May.
Summer Weather in Berkeley
June welcomes a dry and warm summer to Berkeley. Lasting until August, daily high temperatures reach up to 75.7°F (24.3°C). Rainfall is virtually absent during this period, averaging a minuscule 0.08" (2mm). August also witnesses the least rainfall days, with an average of just 1.5 days. Daylight hours peak at 14.8 hours in June, facilitating long, pleasant days. The percentage of cloud cover drops, recording a low 11% in July.
Autumn Weather in Berkeley
Autumn, extending from September to November, experiences a slight drop in temperatures, with averages sliding from a high of 76.6°F (24.8°C) in September to 62.4°F (16.9°C) in November. Gradual resumption of rain is visible with monthly averages rising from 0.08" (2mm) to 0.51" (13mm). However, the amount of daylight decreases steadily, with November recording an average of just over 10 hours.
Winter Weather in Berkeley
The onset of winter in December brings a chill to Berkeley, with average temperatures dropping to a low of 44.6°F (7°C) in December. Rainfall increases significantly, reaching its annual peak of 0.87" (22mm) in December. Sunshine duration contracts to the shortest at 5.8 hours in December, with a similar trend mirrored in daylight hours, reaching a low of 9.6 hours. Simultaneously, cloud percentage increases during the winter months, recording a maximum of 35% in December. Despite regular changes, winter in Berkeley remains relatively mild, with very moderate wind speeds ranging from 5mph (8km/h) to 5.7mph (9.2km/h).
Weather in January
January marks the commencement of the year with cool temperatures, the daily lows falling to 44.2°F (6.8°C) and highs ascending to 56.3°F (13.5°C). With the relative humidity averaging at 73%, foggy mornings become a typical sight in Berkeley, California. Weather in January »
Weather in February
The weather pattern carries over from January to February but with a slight increase in temperature; the lowest and highest temperatures are 45°F (7.2°C) and 58.8°F (14.9°C), respectively. There's a dip in the number of rainfall days, as February watches 6.2 days of rain. Weather in February »
Weather in March
March introduces the spring with warmer temperatures, averaging from 46.4°F (8°C) to 60.8°F (16°C). This transition style is accompanied by a slightly increased cloud cover of 36%. Rainfall sees a slump with merely 0.71" (18mm) of rain recorded in 8.7 days. Weather in March »
Weather in April
Berkeley in April experiences a more considerable leap in temperatures, with the mercury varying between 47.8°F (8.8°C) to 65.3°F (18.5°C). Mirroring the season's exuberance, the cloud coverage drops to 27%, leading to clearer skies and sunnier days. Weather in April »
Weather in May
The May weather in Berkeley, California symbolizes a transitional phase from spring towards summer. The temperatures elevate between 50.5°F (10.3°C) to 68°F (20°C), hinting at the impending warmth. With a UV index of 5, protecting oneself from harsh sunlight becomes crucial in outdoor settings. Weather in May »
Weather in June
June is the entryway to summer in Berkeley with temperatures spanning from 54.1°F (12.3°C) to 73.8°F (23.2°C). Suitable for sunny outdoor activities, this month sees the least cloud cover in the year at 15%. With just 0.08" (2mm) of rainfall observed over 1.6 days, June stands out as the driest month. Weather in June »
Weather in July
July, the peak of summer, witnesses the maximum average temperatures in the range of 55°F (12.8°C) to 75.6°F (24.2°C). Despite being the hottest month, rainfall remains scarce with only 0.08" (2mm) precipitation seen over 2.1 days. Weather in July »
Weather in August
The continuity of summer is reflected in August as the temperatures marginally vary from 56.7°F (13.7°C) to 75.7°F (24.3°C). Wider visibility due to the reduced cloud cover of 14% combined with the approaching autumn greets the residents. Weather in August »
Weather in September
The farewell to summer in September is marked with temperatures averagely ranging from 56.8°F (13.8°C) to 76.6°F (24.8°C). Remarkably, this period has the highest temperature readings of the year in Berkeley, California. Further fall in cloud percentage to 13% permits clear, blue skies and a lower rainfall amounting to only 0.08" (2mm) over 2.3 days. Weather in September »
Weather in October
The full-fledged autumn in October witnesses a sharp fall in temperatures between 54.9°F (12.7°C) to 70.7°F (21.5°C). This dip accompanies the transformation of foliage into vibrant hues, enhancing the aesthetic aura of the city. Weather in October »
Weather in November
November in Berkeley, California welcomes the shy winter, reflected in the maximum and minimum temperatures falling to 62.4°F (16.9°C) and 49.5°F (9.7°C), respectively. A slight rise in the average rainfall to 0.51" (13mm) over 4.7 days gives an initial feel of the approaching winter showers. Weather in November »
Weather in December
December carries the full onsets of winter with temperatures falling between 44.6°F (7°C) and 55.4°F (13°C). The city experiences an average rainfall of 0.87" (22mm) stretched across 7.5 days, reflecting December as the wettest period of the year. Weather in December »
[Resources]Frequently asked questions
How many days does it rain in Berkeley?
Throughout the year, in Berkeley, there are 55.6 rainfall days, and 5.24" (133mm) of precipitation is accumulated.
When is the lowest UV index in Berkeley?
The months with the lowest UV index in Berkeley, California, are January, February, November and December, with an average maximum UV index of 3.
What is the rainiest month in Berkeley?
February is the month with the most rainfall in Berkeley, California. Rain falls for 6.2 days and accumulates 1.1" (28mm) of precipitation.
What is the most humid month in Berkeley?
March is the most humid month, with an average relative humidity of 75%.
When is Daylight Saving Time (DST) in Berkeley?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Berkeley, California, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
What is the month with the highest UV index in Berkeley?
April through September, with an average maximum UV index of 5, are months with the highest UV index.
What is the driest month in Berkeley?
June through September are months with the least rain in Berkeley when the rain falls for 1.6 days and typically aggregates up to 0.08" (2mm) of rain.
When are the longest days in Berkeley?
June has the longest days of the year in Berkeley, with an average of 14h and 42min of daylight.
What month has the most sunshine in Berkeley?
With an average of 11.9h of sunshine, July has the most sunshine of the year in Berkeley, California.
What part of the year is the hottest in Berkeley?
During the warmest month in Berkeley, September, temperatures average a high of 76.6°F (24.8°C) and a low of 56.8°F (13.8°C).
What is the least humid month in Berkeley?
October is the least humid month in Berkeley, California, with an average relative humidity of 64%.
What part of the year is the coldest in Berkeley?
During the coldest month in Berkeley, December, temperatures average a high of 55.4°F (13°C) and a low of 44.6°F (7°C).
What is the month with the shortest days in Berkeley?
With an average of 9h and 36min of daylight, December has the shortest days of the year.
What is the month with the least sunshine in Berkeley?
The month with the least sunshine is December, with an average of 5.8h of sunshine.
Average temperature
Berkeley, CA
The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).
The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure
Berkeley, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed
Berkeley, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
6.2mph - Average wind speed in March:
6.6mph - Average wind speed in April:
7mph - Average wind speed in May:
7.3mph - Average wind speed in June:
7mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.2mph - Average wind speed in September:
5.6mph - Average wind speed in October:
5.2mph - Average wind speed in November:
5mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity
Berkeley, CA
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).
Average rainfall
Berkeley, CA
- Average rainfall in January:
0.94" - Average rainfall in February:
1.1" - Average rainfall in March:
0.71" - Average rainfall in April:
0.24" - Average rainfall in May:
0.28" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.08" - Average rainfall in September:
0.08" - Average rainfall in October:
0.28" - Average rainfall in November:
0.51" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").
Average rainfall days
Berkeley, CA
- Average rainfall days in January:
7.6 days - Average rainfall days in February:
6.2 days - Average rainfall days in March:
8.7 days - Average rainfall days in April:
5.9 days - Average rainfall days in May:
4 days - Average rainfall days in June:
1.6 days
- Average rainfall days in July:
2.1 days - Average rainfall days in August:
1.5 days - Average rainfall days in September:
2.3 days - Average rainfall days in October:
3.5 days - Average rainfall days in November:
4.7 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).
Average daylight / Average sunshine
Berkeley, CA
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
6h and 1min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 5min - Average sunshine in April:
10h and 2min - Average sunshine in May:
10h and 4min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 5min - Average sunshine in September:
11h and 0min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 4min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days
Berkeley, CA
- Average sunshine days in January:
22.3 days - Average sunshine days in February:
20.5 days - Average sunshine days in March:
21.1 days - Average sunshine days in April:
23.7 days - Average sunshine days in May:
23.1 days - Average sunshine days in June:
25.2 days
- Average sunshine days in July:
25.5 days - Average sunshine days in August:
23.3 days - Average sunshine days in September:
24.9 days - Average sunshine days in October:
26 days - Average sunshine days in November:
24.1 days - Average sunshine days in December:
22.1 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).
Average UV index
Berkeley, CA
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Berkeley, CA
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility
Berkeley, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Berkeley, California, USA
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