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Contents
- 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 snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another chilly winter month in Swansea, California, with an average temperature varying between 33.1°F (0.6°C) and 48.4°F (9.1°C). As January takes its course, Swansea's average high-temperature registers at a still frosty 48.4°F (9.1°C), closely aligning with the preceding month. Weather in January »
Weather in February
The last month of the winter, February, is also a frosty month in Swansea, California, with an average temperature fluctuating between 34.2°F (1.2°C) and 49.6°F (9.8°C). The commencement of February notes an average high-temperature of a still frosty 49.6°F (9.8°C), exhibiting little difference from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Swansea, is a fresh month, with an average temperature varying between 54.9°F (12.7°C) and 38.5°F (3.6°C). The weather during March records an average high-temperature of a fresh 54.9°F (12.7°C), closely mirroring the preceding month. Weather in March »
Weather in April
April is a comfortable spring month in Swansea, California, with an average temperature varying between 61.7°F (16.5°C) and 44.2°F (6.8°C). As Swansea welcomes April, the average high-temperature displays a subtle shift, adjusting from a cool 54.9°F (12.7°C) in March to an enjoyable 61.7°F (16.5°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Swansea, California, with an average temperature fluctuating between 52.3°F (11.3°C) and 68.9°F (20.5°C). With the onset of May, Swansea experiences a subtle temperature shift, with the average high-temperature moving from an enjoyable 61.7°F (16.5°C) in April to an agreeable 68.9°F (20.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Swansea, California, with an average temperature fluctuating between 62.6°F (17°C) and 81°F (27.2°C). With the beginning of June, Swansea's average high-temperature sees an increase, transitioning from a pleasant 68.9°F (20.5°C) in May to a warm 81°F (27.2°C). Weather in June »
Weather in July
July in Swansea, California, is a tropical summer month, with an average temperature varying between 69.1°F (20.6°C) and 86°F (30°C). During the warmest month, July, temperatures average a high of 86°F (30°C) and a low of 69.1°F (20.6°C). Weather in July »
Weather in August
August, the last month of the summer in Swansea, is also a moderately hot month, with an average temperature ranging between max 85.5°F (29.7°C) and min 67.6°F (19.8°C). The arrival of August coincides with an average high-temperature of a warm 85.5°F (29.7°C), indicating a minimal shift from July's 86°F (30°C). Weather in August »
Weather in September
September, the first month of the autumn in Swansea, is also a moderately hot month, with an average temperature fluctuating between 60.3°F (15.7°C) and 78.1°F (25.6°C). In September, the average high-temperature marginally drops from 85.5°F (29.7°C) in August to a still moderately hot 78.1°F (25.6°C). Weather in September »
Weather in October
October, like September, in Swansea, California, is another enjoyable autumn month, with temperature in the range of an average high of 67.1°F (19.5°C) and an average low of 49.6°F (9.8°C). Onset of October witnesses a reduction in the average high-temperature, falling from a warm 78.1°F (25.6°C) in September to an enjoyable 67.1°F (19.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Swansea, is another refreshing month, with temperature in the range of an average low of 39.2°F (4°C) and an average high of 56.3°F (13.5°C). November shows a mild decline in the average high-temperature, falling from October's enjoyable 67.1°F (19.5°C) to a moderate 56.3°F (13.5°C). Weather in November »
Weather in December
December, the first month of the winter in Swansea, is also a frosty month, with an average temperature varying between 46.9°F (8.3°C) and 31.5°F (-0.3°C). In Swansea, California, December is the coldest month, with temperatures averaging a high of 46.9°F (8.3°C) and a low of 31.5°F (-0.3°C). Weather in December »
[Resources]Frequently asked questions
How many days does it rain in Swansea?
In Swansea, during the entire year, the rain falls for 48 days and collects up to 4.92" (125mm) of precipitation.
When does it snow in Swansea?
January through April, November and December are months with snowfall in Swansea.
How much does it snow in Swansea?
Throughout the year, in Swansea, there are 4.5 snowfall days, and 3.07" (78mm) of snow is accumulated.
What is the month with the least sunshine in Swansea?
January, February and December, with an average of 7.3h of sunshine, are months with the least sunshine.
When is Daylight Saving Time (DST) in Swansea?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
When it does not snow in Swansea?
In Swansea, snow does not fall in May through October.
What is the driest month in Swansea?
June and September are months with the least rain when the rain falls for 2.7 days and typically aggregates up to 0.16" (4mm) of rain.
When are the longest days in Swansea?
With an average of 14h and 36min of daylight, June has the longest days of the year in Swansea, California.
What month has the most sunshine in Swansea?
The month with the most sunshine is June, with an average of 12.2h of sunshine.
What time of the year is the hottest in Swansea?
Swansea registers the average highest temperatures during July, with peaks of 86°F (30°C) and lows of 69.1°F (20.6°C).
What is the month with the highest UV index in Swansea?
The month with the highest UV index in Swansea is July, with an average maximum UV index of 7.
What is the least humid month in Swansea?
The least humid month is August, with an average relative humidity of 19%.
What is the month with the lowest UV index in Swansea?
November and December, with an average maximum UV index of 2, are months with the lowest UV index in Swansea.
What part of the year is the coldest in Swansea?
Swansea reaches its average lowest temperatures in December, measuring 46.9°F (8.3°C) at the peak and 31.5°F (-0.3°C) at the lowest.
What is the most humid month in Swansea?
December is the most humid month in Swansea, California, with an average relative humidity of 47%.
What is the rainiest month in Swansea?
The month with the most rainfall is December, when the rain falls for 5.1 days and typically aggregates up to 0.67" (17mm) of precipitation.
When does it snow the most in Swansea?
The month with the most snowfall is December, when snow falls for 1.2 days and typically aggregates up to 1.18" (30mm) of snow.
What is the month with the shortest days in Swansea?
December has the shortest days of the year, with an average of 9h and 42min of daylight.
Average temperature
Swansea, CA
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (46.9°F).
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).
Average pressure
Swansea, CA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.87"Hg - Average pressure in June:
29.83"Hg
- Average pressure in July:
29.88"Hg - Average pressure in August:
29.88"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed
Swansea, CA
- Average wind speed in January:
5.9mph - Average wind speed in February:
6.6mph - Average wind speed in March:
7.2mph - Average wind speed in April:
7.6mph - Average wind speed in May:
7.6mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.3mph - Average wind speed in September:
6.2mph - Average wind speed in October:
6.4mph - Average wind speed in November:
5.8mph - Average wind speed in December:
6.2mph
The windiest months (with the highest average wind speed) are April, May and June (7.6mph).
The calmest month (with the lowest average wind speed) is November (5.8mph).
Average humidity
Swansea, CA
The month with the highest relative humidity is December (47%).
The month with the lowest relative humidity is August (19%).
Average rainfall
Swansea, CA
- Average rainfall in January:
0.63" - Average rainfall in February:
0.59" - Average rainfall in March:
0.59" - Average rainfall in April:
0.51" - Average rainfall in May:
0.35" - Average rainfall in June:
0.16"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.24" - Average rainfall in September:
0.16" - Average rainfall in October:
0.24" - Average rainfall in November:
0.35" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is December (0.67").
The driest months (with the least rainfall) are June and September (0.16").
Average rainfall days
Swansea, CA
- Average rainfall days in January:
5.1 days - Average rainfall days in February:
4.5 days - Average rainfall days in March:
5.7 days - Average rainfall days in April:
5.3 days - Average rainfall days in May:
4.7 days - Average rainfall days in June:
2.7 days
- Average rainfall days in July:
4.8 days - Average rainfall days in August:
2.6 days - Average rainfall days in September:
2.3 days - Average rainfall days in October:
2.7 days - Average rainfall days in November:
2.5 days - Average rainfall days in December:
5.1 days
The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is September (2.3 days).
Average snowfall
Swansea, CA
The month with the highest snowfall is December (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Swansea, CA
- Average snowfall days in January:
1 days - Average snowfall days in February:
1.1 days - Average snowfall days in March:
0.3 days - Average snowfall days in April:
0.4 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
1.2 days
The month with the highest number of snowfall days is December (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Swansea, CA
- Average daylight in January:
10h and 0min - 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 2min - Average daylight in August:
13h and 3min - 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 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
7h and 2min - Average sunshine in February:
7h and 2min - Average sunshine in March:
9h and 2min - Average sunshine in April:
11h and 3min - Average sunshine in May:
11h and 5min - Average sunshine in June:
12h and 1min
- Average sunshine in July:
12h and 1min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 5min - Average sunshine in October:
8h and 4min - Average sunshine in November:
7h and 2min - Average sunshine in December:
7h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 18min).
Average sunshine days
Swansea, CA
- Average sunshine days in January:
23.5 days - Average sunshine days in February:
22.3 days - Average sunshine days in March:
24.3 days - Average sunshine days in April:
22 days - Average sunshine days in May:
21.8 days - Average sunshine days in June:
24.7 days
- Average sunshine days in July:
20 days - Average sunshine days in August:
23.3 days - Average sunshine days in September:
25 days - Average sunshine days in October:
27.7 days - Average sunshine days in November:
26.3 days - Average sunshine days in December:
25.3 days
The month with the most sunshine days is October (27.7 days).
The month with the least sunshine days is July (20 days).
Average UV index
Swansea, CA
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover
Swansea, CA
The month with the most cloud cover is January (Cloud cover 16).
The months with the least cloud cover are August and September (Cloud cover 5).
Average visibility
Swansea, 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).
Swansea, California, USA
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