October weather forecastAlameda, CA
October
Weather in October
October, like September, is another pleasant autumn month in Alameda, California, with an average temperature ranging between min 54.5°F (12.5°C) and max 70.2°F (21.2°C).Temperature
Alameda's weather subtly changes with the onset of October, barely falling from a moderately hot 75.9°F (24.4°C) in September to a pleasant 70.2°F (21.2°C). Alameda throughout October, records an average low-temperature of 54.5°F (12.5°C).Humidity
October is the least humid month in Alameda, California, with an average relative humidity of 65%.Rainfall
In Alameda, California, in October, during 4.5 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. In Alameda, during the entire year, the rain falls for 67.2 days and collects up to 6.1" (155mm) of precipitation.Ocean temperature
In Alameda, the average seawater temperature in October is 57°F (13.9°C).Note: Swimming in 57°F (13.9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.
Daylight
The average length of the day in October is 11h and 12min.On the first day of October in Alameda, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:10 pm PDT.
Sunshine
The average sunshine in October is 7.1h.UV index
In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 4 in October leads to these recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Alameda, CA
- Average high temperature in October: 70.2°F
The warmest month (with the highest average high temperature) is September (75.9°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in October: 54.5°F
The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is January (45°F).
Average pressure in October
Alameda, CA
- Average pressure in October: 29.98"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 in October
Alameda, CA
- Average wind speed in October: 5.2mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest months (with the lowest average wind speed) are October and November (5.2mph).
Average humidity in October
Alameda, CA
- Average humidity in October: 65%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (65%).
Average rainfall in October
Alameda, CA
- Average rainfall in October: 0.31"
The wettest month (with the highest rainfall) is February (1.18").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in October
Alameda, CA
- Average rainfall days in October: 4.5 days
The month with the highest number of rainy days is March (11.4 days).
The month with the least rainy days is August (1.3 days).
Average sea temperature in October
Alameda, CA
- Average sea temperature in October: 56.9°F
The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).
Average daylight in October /
Average sunshine in October
Alameda, CA
- Average daylight in October: 11h and 12min
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 October: 7h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in October
Alameda, CA
- Average sunshine days in October: 24.8 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in October
Alameda, CA
- Average UV index in October: 4
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, November and December (UV index 3).
Average cloud cover in October
Alameda, CA
- Average cloud cover in October: 16
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in October
Alameda, CA
- Average visibility in October: 6mi
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).
