April weather forecastOpal Cliffs, CA
April
Weather in April
April is an enjoyable spring month in Opal Cliffs, California, with an average temperature fluctuating between 63.1°F (17.3°C) and 47.3°F (8.5°C).Temperature
The transition from March to April sees an average high-temperature of a comfortable 63.1°F (17.3°C), indicating a minor variance from the prior month. April nights are marked by an average temperature drop to a chilly 47.3°F (8.5°C).Humidity
The average relative humidity in April is 73%.Rainfall
In Opal Cliffs, in April, it is raining for 9 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 77.9 rainfall days, and 14.45" (367mm) of precipitation is accumulated.Ocean temperature
With an average ocean temperature of 53.8°F (12.1°C), April is the month with the coldest seawater.Note: Entering waters of 53.8°F (12.1°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
In April, the average length of the day is 13h and 10min.On the first day of the month, sunrise is at 6:52 am and sunset at 7:30 pm. On the last day of April, sunrise is at 6:13 am and sunset at 7:56 pm PDT.
Sunshine
In April, the average sunshine is 10h.UV index
In April, the average daily maximum UV index in Opal Cliffs, California, is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In April, the maximum UV index of 4 suggests this advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Opal Cliffs, CA
- Average high temperature in April: 63.1°F
The warmest months (with the highest average high temperature) are August and September (73°F).
The month with the lowest average high temperature is December (57.2°F).
- Average low temperature in April: 47.3°F
The month with the highest average low temperature is September (55.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in April
Opal Cliffs, CA
- Average pressure in April: 30.04"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in April
Opal Cliffs, CA
- Average wind speed in April: 7.4mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in April
Opal Cliffs, CA
- Average humidity in April: 73%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).
Average rainfall in April
Opal Cliffs, CA
- Average rainfall in April: 0.94"
The wettest month (with the highest rainfall) is December (2.8").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in April
Opal Cliffs, CA
- Average rainfall days in April: 9 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.2 days).
Average sea temperature in April
Opal Cliffs, CA
- Average sea temperature in April: 53.8°F
The best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).
Average daylight in April /
Average sunshine in April
Opal Cliffs, CA
- Average daylight in April: 13h 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 42min).
- Average sunshine in April: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in April
Opal Cliffs, CA
- Average sunshine days in April: 19.9 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.4 days).
Average UV index in April
Opal Cliffs, CA
- Average UV index in April: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and November (UV index 3).
Average cloud cover in April
Opal Cliffs, CA
- Average cloud cover in April: 30
The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are July and September (Cloud cover 15).
Average visibility in April
Opal Cliffs, 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).
