Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
San Francisco's temperature records reveal October as the coldest month, marked by average highs of 25.4°C (77.7°F) and lows of 18.9°C (66°F).Humidity
October is the most humid month, with an average relative humidity of 89%.Rainfall
October is the month with the most rainfall in San Francisco. Rain falls for 30.2 days and accumulates 396mm (15.59") of precipitation.Daylight
In October, the average length of the day is 11h and 54min.On the first day of the month, sunrise is at 05:24 and sunset at 17:26. On the last day of October, sunrise is at 05:26 and sunset at 17:13 CST.
Sunshine
October has the least sunshine of the year in San Francisco, with an average of 7h of sunshine.UV index
The months with the highest UV index are January through April, June, July, September, October and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In October, a daily maximum UV index of 6 leads to the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What month is the coldest in San Francisco?
What is the average October temperature in San Francisco?
What is the most humid month in San Francisco?
What is the average humidity in October in San Francisco?
What is the rainiest month in San Francisco?
How many days does it rain in October in San Francisco?
What is the average length of the day in October in San Francisco?
When are sunrise and sunset in October in San Francisco?
What is the month with the least sunshine in San Francisco?
How long on average sun shines in October in San Francisco?
When is the highest UV index in San Francisco?
What is the UV index intensity in October in San Francisco?
Average temperature in October
San Francisco, Costa Rica
- Average high temperature in October: 25.4°C
The warmest months (with the highest average high temperature) are March and April (29.7°C).
The month with the lowest average high temperature is October (25.4°C).
- Average low temperature in October: 18.9°C
The month with the highest average low temperature is May (19.8°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in October
San Francisco, Costa Rica
- Average pressure in October: 1010.7mbar
The month with the highest atmospheric pressure is January (1012.1mbar).
The month with the lowest atmospheric pressure is October (1010.7mbar).
Average wind speed in October
San Francisco, Costa Rica
- Average wind speed in October: 4.1km/h
The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest month (with the lowest average wind speed) is September (3.8km/h).
Average humidity in October
San Francisco, Costa Rica
- Average humidity in October: 89%
The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is March (70%).
Average rainfall in October
San Francisco, Costa Rica
- Average rainfall in October: 396mm
The wettest month (with the highest rainfall) is October (396mm).
The driest month (with the least rainfall) is February (17mm).
Average rainfall days in October
San Francisco, Costa Rica
- Average rainfall days in October: 30.2 days
The month with the highest number of rainy days is October (30.2 days).
The month with the least rainy days is February (10.3 days).
Average daylight in October /
Average sunshine in October
San Francisco, Costa Rica
- Average daylight in October: 11h and 5min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in October: 7h and 0min
The month with the most sunshine is March (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 7h and 0min).
Average sunshine days in October
San Francisco, Costa Rica
- Average sunshine days in October: 0.6 days
The month with the most sunshine days is January (16.7 days).
The month with the least sunshine days is September (0.5 days).
Average UV index in October
San Francisco, Costa Rica
- Average UV index in October: 6
The months with the highest UV index are January, February, March, April, June, July, September, October and December (UV index 6).
The months with the lowest UV index are May, August and November (UV index 5).
Average cloud cover in October
San Francisco, Costa Rica
- Average cloud cover in October: 54
The month with the most cloud cover is October (Cloud cover 54).
The month with the least cloud cover is February (Cloud cover 19).
Average visibility in October
San Francisco, Costa Rica
- Average visibility in October: 7km
The months with the highest visibility are February and March (10km).
The months with the lowest visibility are August, September, October and November (7km).
San Francisco, Costa Rica
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