Monthly weather forecast and climate
Port San Luis, CA

Average temperature
Port San Luis, CA

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).

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Average pressure
Port San Luis, CA

Average pressure - Port San Luis, CA

The month with the highest atmospheric pressure is January (30.12").
Months with the lowest atmospheric pressure are June, August and September (29.91").

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Average wind speed
Port San Luis, CA

Average wind speed - Port San Luis, CA

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).

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Average humidity
Port San Luis, CA

Average humidity - Port San Luis, CA

The month with the highest relative humidity is March (69%).
Months with the lowest relative humidity are September and October (57%).

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Average rainfall
Port San Luis, CA

Average rainfall - Port San Luis, CA

The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days
Port San Luis, CA

Average rainfall days - Port San Luis, CA

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).

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Average daylight / Average sunshine
Port San Luis, CA

Average daylight / Average sunshine - Port San Luis, CA

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

Months with the most sunshine are June, July and August (Average sunshine: 12h).
Months with the least sunshine are February and December (Average sunshine: 6.5).

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Average sunshine days
Port San Luis, CA

Average sunshine days - Port San Luis, CA

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is February (19.1 days).

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Average visibility
Port San Luis, CA

Average visibility - Port San Luis, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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