Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The average high-temperature in April, at a comfortable 64.6°F (18.1°C), reveals a modest deviation from March's 60.6°F (15.9°C). The temperature lowers to an average of 47.3°F (8.5°C) during April nights.Humidity
The average relative humidity in April is 72%.Rainfall
In Alameda, California, in April, it is raining for 6.7 days, with typically 0.28" (7mm) of accumulated precipitation. Throughout the year, in Alameda, there are 67.2 rainfall days, and 6.1" (155mm) of precipitation is accumulated.Ocean temperature
April through June, with an average ocean temperature of 53.1°F (11.7°C), are months with the coldest seawater in Alameda, California.Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.
Daylight
In Alameda, the average length of the day in April is 13h and 12min.On the first day of April, sunrise is at 6:52 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:58 pm PDT.
Sunshine
The average sunshine in April in Alameda, California, is 10.5h.UV index
The months with the highest UV index are April through September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In April, the maximum UV index of 5 transforms into these recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. It's recommended to limit sun exposure when its radiation is at its peak during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What is the average April temperature in Alameda?
What is the average humidity in April in Alameda?
How many days does it rain in April in Alameda?
What are the months with the coldest ocean in Alameda?
How cold is the water in April in Alameda?
How many hours of daylight does Alameda have in April?
When is the sunrise / sunset in April in Alameda?
How many hours of sunshine does Alameda have in April?
When is the highest UV index in Alameda?
What is the UV index intensity in April in Alameda?
Average temperature in April
Alameda, CA
- Average high temperature in April: 64.6°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 April: 47.3°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 April
Alameda, CA
- Average pressure in April: 30.03"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 April
Alameda, CA
- Average wind speed in April: 6.9mph
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 April
Alameda, CA
- Average humidity in April: 72%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (65%).
Average rainfall in April
Alameda, CA
- Average rainfall in April: 0.28"
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 April
Alameda, CA
- Average rainfall days in April: 6.7 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 April
Alameda, CA
- Average sea temperature in April: 53°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 April /
Average sunshine in April
Alameda, CA
- Average daylight in April: 13h and 1min
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 April: 10h and 3min
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 April
Alameda, CA
- Average sunshine days in April: 21.8 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 April
Alameda, CA
- Average UV index in April: 5
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 April
Alameda, CA
- Average cloud cover in April: 26
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 April
Alameda, CA
- Average visibility in April: 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).
Alameda, California, USA
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