May weather forecast
Fortuna, Costa Rica

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Weather in May

May brings forth an increased rainfall of 260mm (10.24") in Fortuna, Costa Rica, heralding the start of the wet season. In contrast, the temperature marginally drops, yet remains within the comfortable range for most individuals. Owing to the extended period of daylight, outdoor activities stay in the agenda despite the increased rainfall. The UV exposure continues to soar, requiring continuous protective measures for skin care. Transitioning into June, the climate entails more showers and the temperature remains fairly constant.

Temperature

As Fortuna welcomes May, the average high-temperature is noted at a still hot 30°C (86°F), closely aligning with the preceding month. In the month of May, the nighttime temperature dips to a steady average of 23°C (73.4°F).

Rainfall

In Fortuna, Costa Rica, in May, it is raining for 17 days, with typically 260mm (10.24") of accumulated precipitation. In Fortuna, during the entire year, the rain falls for 190 days and collects up to 3508mm (138.11") of precipitation.

Daylight

In May, the average length of the day in Fortuna, Costa Rica, is 12h and 37min.
On the first day of the month, sunrise is at 05:20 and sunset at 17:50. On the last day of May, in Fortuna, sunrise is at 05:15 and sunset at 17:57 CST.

Sunshine

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

UV index

The months with the highest UV index in Fortuna are February through October, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 12 in May leads to these recommendations:
Carry out every crucial safety measure. People with fair skin may sustain burns in fewer than 5 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.
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Frequently asked questions

How hot is May in Fortuna?

During May, Fortuna experiences an average high-temperature of 30°C (86°F) and a low-temperature of 23°C (73.4°F).

How many days does it rain in May in Fortuna?

In May, the rain falls for 17 days. Throughout May, 260mm (10.24") of precipitation is accumulated.

What is the average length of the day in May in Fortuna?

The average day length in May in Fortuna, Costa Rica, is 12h and 37min.

What time are sunrise and sunset in May in Fortuna?

In May, on the first day of the month, sunrise is at 05:20 and sunset at 17:50. On the last day of the month, in Fortuna, sunrise is at 05:15 and sunset at 17:57 CST.

How long on average sun shines in May in Fortuna?

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

What are the months with the highest UV index in Fortuna?

The months with the highest UV index in Fortuna, Costa Rica, are February through October, with an average maximum UV index of 12.

What is the UV index reading in May in Fortuna?

In Fortuna, the average daily maximum UV index in May is 12. A UV Index of 11, and more, symbolizes an ultimate hazard to health from exposure to the Sun's UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Fortuna, Costa Rica

Average temperature in May - Fortuna, Costa Rica
  • Average high temperature in May: 30°C

The 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).
The coldest months (with the lowest average low temperature) are January, October, November and December (21°C).

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Average rainfall in May
Fortuna, Costa Rica

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 least rainfall) is March (81mm).

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Average rainfall days in May
Fortuna, Costa Rica

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).
The months with the least rainy days are February and March (7 days).

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Average daylight in May /
Average sunshine in May
Fortuna, Costa Rica

Average daylight in May / Average sunshine in May - Fortuna, Costa Rica
  • Average daylight in May: 12h and 4min

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 May: 6h

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

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Average UV index in May
Fortuna, Costa Rica

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

The 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).

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Fortuna, Costa Rica

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