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
Weather in April
Temperature
The month of April sees the highest average temperatures in San Isidro, Costa Rica, reaching 26°C (78.8°F) at the peak and 15.9°C (60.6°F) at the low.Humidity
In April, the average relative humidity in San Isidro is 78%.Rainfall
In San Isidro, in April, during 21.9 rainfall days, 100mm (3.94") of precipitation is typically accumulated. Throughout the year, in San Isidro, there are 287.8 rainfall days, and 2585mm (101.77") of precipitation is accumulated.Daylight
In San Isidro, the average length of the day in April is 12h and 22min.On the first day of April in San Isidro, Costa Rica, sunrise is at 05:32 and sunset at 17:46. On the last day of the month, sunrise is at 05:18 and sunset at 17:47 CST.
Sunshine
In San Isidro, the average sunshine in April is 8.6h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 5. The months with the lowest UV index in San Isidro are January through December, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in April converts into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What time of the year is the hottest in San Isidro?
What are April temperatures in San Isidro?
What is the average humidity in April in San Isidro?
How many days does it rain in April in San Isidro?
How many hours of daylight does San Isidro have in April?
When are sunrise and sunset in April in San Isidro?
How many hours of sunshine does San Isidro have in April?
When is the highest UV index in San Isidro?
What is the month with the lowest UV index in San Isidro?
What is the UV index intensity in April in San Isidro?
Average temperature in April
San Isidro, Costa Rica
- Average high temperature in April: 26°C
The warmest month (with the highest average high temperature) is April (26°C).
The month with the lowest average high temperature is October (22.4°C).
- Average low temperature in April: 15.9°C
The month with the highest average low temperature is June (17°C).
The coldest month (with the lowest average low temperature) is January (13.8°C).
Average pressure in April
San Isidro, Costa Rica
- Average pressure in April: 1011.5mbar
The month with the highest atmospheric pressure is January (1012.3mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).
Average wind speed in April
San Isidro, Costa Rica
- Average wind speed in April: 7km/h
The windiest month (with the highest average wind speed) is February (10.7km/h).
The calmest month (with the lowest average wind speed) is September (4.3km/h).
Average humidity in April
San Isidro, Costa Rica
- Average humidity in April: 78%
The months with the highest relative humidity are September and October (91%).
The months with the lowest relative humidity are February and March (75%).
Average rainfall in April
San Isidro, Costa Rica
- Average rainfall in April: 100mm
The wettest month (with the highest rainfall) is October (438mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in April
San Isidro, Costa Rica
- Average rainfall days in April: 21.9 days
The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (12.2 days).
Average daylight in April /
Average sunshine in April
San Isidro, Costa Rica
- 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 36min).
- Average sunshine in April: 8h and 4min
The month with the most sunshine is February (Average sunshine: 9h and 12min).
The month with the least sunshine is October (Average sunshine: 5h and 48min).
Average sunshine days in April
San Isidro, Costa Rica
- Average sunshine days in April: 6.4 days
The month with the most sunshine days is March (13.5 days).
The month with the least sunshine days is September (0.1 days).
Average UV index in April
San Isidro, Costa Rica
- Average UV index in April: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in April
San Isidro, Costa Rica
- Average cloud cover in April: 42
The month with the most cloud cover is October (Cloud cover 68).
The month with the least cloud cover is February (Cloud cover 30).
Average visibility in April
San Isidro, Costa Rica
- Average visibility in April: 8km
The months with the highest visibility are January, February and March (9km).
The months with the lowest visibility are August, September, October and November (6km).
San Isidro, Costa Rica
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