Climate and monthly weather forecastPort San Luis, CA
Climate and monthly weather forecast
Weather in January
January is a refreshing winter month in Port San Luis, California, with an average temperature fluctuating between 62.4°F (16.9°C) and 46.9°F (8.3°C). In January, Port San Luis's weather conditions record an average high-temperature of a still refreshing 62.4°F (16.9°C), demonstrating little divergence from the preceding month. Weather in January »Weather in February
February, the last month of the winter in Port San Luis, is another refreshing month, with an average temperature varying between 62.2°F (16.8°C) and 45.7°F (7.6°C). Stepping into February, Port San Luis records an average high-temperature of a still comfortable 62.2°F (16.8°C), almost consistent with January. Weather in February »Weather in March
March, the first month of the spring in Port San Luis, is still a refreshing month, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 46.4°F (8°C). In March, Port San Luis experiences a minor shift in meteorological conditions with average high-temperatures marked at a still comfortable 64°F (17.8°C), closely mirroring the climate in February. Weather in March »Weather in April
April, the same as March, is another enjoyable spring month in Port San Luis, California, with an average temperature ranging between max 67.8°F (19.9°C) and min 48.2°F (9°C). Port San Luis's weather, upon April's arrival, documents an average high-temperature of a still comfortable 67.8°F (19.9°C), nearly identical to the prior month. Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Port San Luis, California, with an average temperature fluctuating between 51.4°F (10.8°C) and 71.2°F (21.8°C). The onset of May brings an average high-temperature of an agreeable 71.2°F (21.8°C), nearly matching the April temperature. Weather in May »Weather in June
June, the first month of the summer in Port San Luis, is a moderately hot month, with an average temperature ranging between min 55°F (12.8°C) and max 76.6°F (24.8°C). In Port San Luis, the onset of June comes with a modest high-temperature shift, transitioning from May's agreeable 71.2°F (21.8°C) to a warm 76.6°F (24.8°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Port San Luis, California, with temperature in the range of an average low of 58.8°F (14.9°C) and an average high of 80.1°F (26.7°C). June's transformation into July witnesses an average high-temperature of a still moderately hot 80.1°F (26.7°C), noting a minor change from the preceding month. Weather in July »Weather in August
The last month of the summer, August, is another warm month in Port San Luis, California, with an average temperature fluctuating between 80.2°F (26.8°C) and 59.5°F (15.3°C). August proves to be the warmest month, recording an average peak temperature of 80.2°F (26.8°C) and a minimum temperature of 59.5°F (15.3°C). Weather in August »Weather in September
September, the first month of the autumn in Port San Luis, is also a moderately hot month, with an average temperature ranging between min 60.3°F (15.7°C) and max 79.9°F (26.6°C). Port San Luis's weather in September, with an average high-temperature of a still moderately hot 79.9°F (26.6°C), subtly shifts from August's 80.2°F (26.8°C). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Port San Luis, California, with an average temperature varying between 74.3°F (23.5°C) and 56.5°F (13.6°C). The arrival of October suggests a slight decrease in the average high-temperature, moving from 79.9°F (26.6°C) in September to a still moderately hot 74.3°F (23.5°C). Weather in October »Weather in November
November, the last month of the autumn in Port San Luis, is another comfortable month, with an average temperature ranging between min 51.3°F (10.7°C) and max 67.1°F (19.5°C). The arrival of November is marked by a minor reduction in average high-temperature, sliding from a moderately hot 74.3°F (23.5°C) in October to an enjoyable 67.1°F (19.5°C). Weather in November »Weather in December
December, the first month of the winter in Port San Luis, is also a moderate month, with temperature in the range of an average high of 60.3°F (15.7°C) and an average low of 46.2°F (7.9°C). December is the month when Port San Luis experiences its coldest temperatures, averaging a high of 60.3°F (15.7°C) and a low of 46.2°F (7.9°C). Weather in December »Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Port San Luis, during the entire year, the rain falls for 57 days and collects up to 9.57" (243mm) of precipitation.
The months with the least sunshine are February and December, with an average of 6.5h of sunshine.
February is the month with the lowest UV index, with an average maximum UV index of 3.
March is the most humid month, with an average relative humidity of 69%.
The month with the most rainfall is March, when the rain falls for 10.5 days and typically aggregates up to 2.01" (51mm) of precipitation.
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.
June and August are months with the least rain when the rain falls for 1.1 days and typically aggregates up to 0.04" (1mm) of rain.
With an average of 14h and 30min of daylight, June has the longest days of the year.
June through August, with an average of 12h of sunshine, are months with the most sunshine.
The months with the highest UV index are June and August, with an average maximum UV index of 6.
In Port San Luis, the peak temperatures are generally noted in August, averaging a high of 80.2°F (26.8°C) and a low of 59.5°F (15.3°C).
September and October, with an average relative humidity of 57%, are the least humid months.
Port San Luis's December weather reaches an average high of 60.3°F (15.7°C) and an average low of 46.2°F (7.9°C), making it the coldest month.
December has the shortest days of the year, with an average of 9h and 48min of daylight.
Average temperature
Port San Luis, CA
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (60.3°F).
The month with the highest average low temperature is September (60.3°F).
The coldest month (with the lowest average low temperature) is February (45.7°F).
Average pressure
Port San Luis, CA
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.91"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed
Port San Luis, CA
- Average wind speed in January:
6mph - Average wind speed in February:
6.5mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.8mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.3mph - Average wind speed in October:
5.8mph - Average wind speed in November:
5.7mph - Average wind speed in December:
6.2mph
The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (5.3mph).
Average humidity
Port San Luis, CA
The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are September and October (57%).
Average rainfall
Port San Luis, CA
- Average rainfall in January:
1.85" - Average rainfall in February:
1.77" - Average rainfall in March:
2.01" - Average rainfall in April:
0.63" - Average rainfall in May:
0.28" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.12" - Average rainfall in August:
0.04" - Average rainfall in September:
0.12" - Average rainfall in October:
0.47" - Average rainfall in November:
0.79" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days
Port San Luis, CA
- Average rainfall days in January:
6.9 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
6.8 days - Average rainfall days in May:
3.6 days - Average rainfall days in June:
1.1 days
- Average rainfall days in July:
2.3 days - Average rainfall days in August:
0.6 days - Average rainfall days in September:
1.8 days - Average rainfall days in October:
3.4 days - Average rainfall days in November:
4.5 days - Average rainfall days in December:
7.7 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.6 days).
Average daylight / Average sunshine
Port San Luis, CA
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 42min - Average sunshine in February:
6h and 30min - Average sunshine in March:
8h and 30min - Average sunshine in April:
10h and 48min - Average sunshine in May:
11h and 24min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 18min - Average sunshine in October:
7h and 36min - Average sunshine in November:
7h and 0min - Average sunshine in December:
6h and 30min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days
Port San Luis, CA
- Average sunshine days in January:
22.8 days - Average sunshine days in February:
19.1 days - Average sunshine days in March:
19.7 days - Average sunshine days in April:
22.3 days - Average sunshine days in May:
26.1 days - Average sunshine days in June:
28.3 days
- Average sunshine days in July:
27.4 days - Average sunshine days in August:
29.2 days - Average sunshine days in September:
27.9 days - Average sunshine days in October:
26.7 days - Average sunshine days in November:
24.5 days - Average sunshine days in December:
22.2 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is February (19.1 days).
Average UV index
Port San Luis, CA
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is February (UV index 3).
Average cloud cover
Port San Luis, CA
The month with the most cloud cover is March (Cloud cover 28).
The months with the least cloud cover are August and September (Cloud cover 6).
Average visibility
Port San Luis, 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).
