Fortuna
Costa Rica
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Fortuna, Costa Rica

The last month of the spring, May, is another tropical month in Fortuna, Costa Rica, with temperature in the range of an average high of 30°C (86°F) and an average low of 23°C (73.4°F).

Temperature

In Fortuna, the average high-temperature is relatively the same as in April - a still hot 30°C (86°F). In Fortuna, the average low-temperature is 23°C (73.4°F).

Rainfall

In Fortuna, it is raining for 17 days, with typically 260mm (10.2") of accumulated precipitation. In Fortuna, Costa Rica, during the entire year, the rain falls for 190 days and collects up to 3508mm (138.1") of precipitation.

Daylight

In Fortuna, Costa Rica, the average length of the day in May is 12.6h.

Sunshine

In Fortuna, the average sunshine in May is 6h.

UV index

Months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 12 transform into the following instructions:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.

What is the temperature in May in Fortuna?

The average high-temperature, in May, in Fortuna, is 30°C (86°F), while the average low-temperature is 23°C (73.4°F).

How many days does it rain in May in Fortuna?

In May, in Fortuna, Costa Rica, the rain falls for 17 days. Throughout May, 260mm (10.2") of precipitation is accumulated.

How many hours of daylight does Fortuna have in May?

In Fortuna, the average length of the day in May is 12.6h.

How long on average sun shines in May in Fortuna?

In Fortuna, the average sunshine in May is 6h.

When is the highest UV index in Fortuna?

Months with the highest UV index in Fortuna are February through October, with an average maximum UV index of 12.

What is the UV index intensity in May in Fortuna?

The average daily maximum UV index in May is 12. A UV Index reading of 11, and higher, represents an extreme health vulnerability from unprotected exposure to the UV radiation.
Average temperature in May - Fortuna, Costa Rica
  • Average high temperature in May: 30°C

Warmest months (with the highest average high temperature) are March and April (32°C).
The month with the lowest average high temperature is November (28°C).

  • Average low temperature in May: 23°C

The month with the highest average low temperature is April (24°C).
Coldest months (with the lowest average low temperature) are January, October, November and December (21°C).

Average rainfall in May - Fortuna, Costa Rica
  • Average rainfall in May: 260mm

The wettest month (with the highest rainfall) is July (462mm).
The driest month (with the lowest rainfall) is March (81mm).

Average rainfall days in May - Fortuna, Costa Rica
  • Average rainfall days in May: 17 days

The month with the highest number of rainy days is September (23 days).
Months with the lowest number of rainy days are February and March (7 days).

Average daylight in May / Average sunshine in May - Fortuna, Costa Rica
  • Average daylight in May: 12.6h

Months with the longest days are June and July (Average daylight: 12.7h).
The month with shortest days is December (Average daylight: 11.5h).

  • Average sunshine in May: 6h

Months with most sunshine are February, March and April (Average sunshine: 7h).
Months with least sunshine are September, October and November (Average sunshine: 5).

Average UV index in May - Fortuna, Costa Rica
  • Average UV index in May: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).