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 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
April
Weather in April
Temperature
On the advent of April, California's average high-temperature exhibits a minor adjustment to a still warm 29.6°C (85.3°F) from March's 28.9°C (84°F). During April, the nighttime temperatures align closely with the daytime averages, measuring a still moderately hot 25.8°C (78.4°F).Heat index
For most parts of April, the heat index is appraised at a fiery hot 35°C (95°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
March and April, with an average relative humidity of 74%, are the least humid months.Rainfall
April is the month with the least rainfall in California. Rain falls for 11.6 days and accumulates 17mm (0.67") of precipitation.Daylight
The average length of the day in April is 12h and 22min.On the first day of the month, sunrise is at 06:02 and sunset at 18:16. On the last day of April, in California, sunrise is at 05:48 and sunset at 18:17 AST.
Sunshine
The average sunshine in April in California is 10h.UV index
The months with the highest UV index in California are January through December, with an average maximum UV index of 7. The months with the lowest UV index in California are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 7 during April translates into the following guidance:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in California during April?
What is the least humid month in California?
What is the average humidity in April in California?
What is the driest month in California?
How many days does it rain in April in California?
What is the average length of the day in April in California?
When is the sunrise / sunset in April in California?
How many hours of sunshine does California have in April?
What are the months with the highest UV index in California?
When is the lowest UV index in California?
What is the UV index intensity in April in California?
Average temperature in April
California, Trinidad and Tobago
- Average high temperature in April: 29.6°C
The warmest month (with the highest average high temperature) is September (30.5°C).
The month with the lowest average high temperature is January (28.2°C).
- Average low temperature in April: 25.8°C
The months with the highest average low temperature are September and October (26.5°C).
The coldest month (with the lowest average low temperature) is February (24.7°C).
Average pressure in April
California, Trinidad and Tobago
- Average pressure in April: 1012.8mbar
The month with the highest atmospheric pressure is June (1013.7mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in April
California, Trinidad and Tobago
- Average wind speed in April: 16.5km/h
The windiest month (with the highest average wind speed) is May (17km/h).
The calmest month (with the lowest average wind speed) is August (12.6km/h).
Average humidity in April
California, Trinidad and Tobago
- Average humidity in April: 74%
The months with the highest relative humidity are July, November and December (78%).
The months with the lowest relative humidity are March and April (74%).
Average rainfall in April
California, Trinidad and Tobago
- Average rainfall in April: 17mm
The wettest month (with the highest rainfall) is August (97mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in April
California, Trinidad and Tobago
- Average rainfall days in April: 11.6 days
The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is April (11.6 days).
Average daylight in April /
Average sunshine in April
California, Trinidad and Tobago
- Average daylight in April: 12h and 2min
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 30min).
- Average sunshine in April: 10h and 0min
The months with the most sunshine are August and September (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in April
California, Trinidad and Tobago
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is April (14.3 days).
The month with the least sunshine days is July (5.6 days).
Average UV index in April
California, Trinidad and Tobago
- Average UV index in April: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in April
California, Trinidad and Tobago
- Average cloud cover in April: 36
The month with the most cloud cover is June (Cloud cover 42).
The month with the least cloud cover is September (Cloud cover 27).
Average visibility in April
California, Trinidad and Tobago
- Average visibility in April: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
