May weather forecast
San José de la Montaña, Costa Rica

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Weather in May

The last month of the spring, May, is also a moderately hot month in San José de la Montaña, Costa Rica, with an average temperature ranging between max 27.7°C (81.9°F) and min 19.8°C (67.6°F).

Temperature

The advent of May observes an average high-temperature of a still moderately hot 27.7°C (81.9°F), nearly identical to April's 29.7°C (85.5°F). An average low-temperature of 19.8°C (67.6°F) is noted during the nights in May.

Heat index

May's average heat index is computed to be a tropical 32°C (89.6°F). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

In May, the average relative humidity is 82%.

Rainfall

In San José de la Montaña, in May, it is raining for 27.2 days, with typically 339mm (13.35") of accumulated precipitation. In San José de la Montaña, during the entire year, the rain falls for 272 days and collects up to 2217mm (87.28") of precipitation.

Daylight

The average length of the day in May is 12h and 35min.
On the first day of the month, sunrise is at 05:18 and sunset at 17:48. On the last day of May, sunrise is at 05:14 and sunset at 17:54 CST.

Sunshine

In San José de la Montaña, the average sunshine in May is 7.8h.

UV index

The months with the lowest UV index are May, August and November, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 5 in May translates into this advice:
Guard yourself - Avoiding sunburn is suggested. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What is the temperature in May in San José de la Montaña?

The average high-temperature, in May, in San José de la Montaña, is 27.7°C (81.9°F), while the average low-temperature is 19.8°C (67.6°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in May is computed to be 32°C (89.6°F).

What is the average humidity in May in San José de la Montaña?

In San José de la Montaña, the average relative humidity in May is 82%.

How many days does it rain in May in San José de la Montaña?

In May, in San José de la Montaña, Costa Rica, the rain falls for 27.2 days. Throughout May, 339mm (13.35") of precipitation is accumulated.

What is the average length of the day in May in San José de la Montaña?

In San José de la Montaña, Costa Rica, the average day length in May is 12h and 35min.

What time are sunrise and sunset in May in San José de la Montaña?

On the first day of May, sunrise is at 05:18 and sunset at 17:48. On the last day of the month, sunrise is at 05:14 and sunset at 17:54 CST.

How long on average sun shines in May in San José de la Montaña?

In May, the average sunshine duration is 7.8h.

What is the month with the lowest UV index in San José de la Montaña?

May, August and November, with an average maximum UV index of 5, are months with the lowest UV index.

What is the UV index reading in May in San José de la Montaña?

In San José de la Montaña, Costa Rica, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
San José de la Montaña, Costa Rica

Average temperature in May - San José de la Montaña, Costa Rica
  • Average high temperature in May: 27.7°C

The warmest months (with the highest average high temperature) are March and April (29.7°C).
The month with the lowest average high temperature is October (25.4°C).

  • Average low temperature in May: 19.8°C

The month with the highest average low temperature is May (19.8°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).

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Average pressure in May
San José de la Montaña, Costa Rica

Average pressure in May - San José de la Montaña, Costa Rica
  • Average pressure in May: 1011mbar

The month with the highest atmospheric pressure is January (1012.1mbar).
The month with the lowest atmospheric pressure is October (1010.7mbar).

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Average wind speed in May
San José de la Montaña, Costa Rica

Average wind speed in May - San José de la Montaña, Costa Rica
  • Average wind speed in May: 4.8km/h

The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest month (with the lowest average wind speed) is September (3.8km/h).

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Average humidity in May
San José de la Montaña, Costa Rica

Average humidity in May - San José de la Montaña, Costa Rica
  • Average humidity in May: 82%

The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in May
San José de la Montaña, Costa Rica

Average rainfall in May - San José de la Montaña, Costa Rica
  • Average rainfall in May: 339mm

The wettest month (with the highest rainfall) is October (396mm).
The driest month (with the least rainfall) is February (17mm).

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Average rainfall days in May
San José de la Montaña, Costa Rica

Average rainfall days in May - San José de la Montaña, Costa Rica
  • Average rainfall days in May: 27.2 days

The month with the highest number of rainy days is October (30.2 days).
The month with the least rainy days is February (10.3 days).

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Average daylight in May /
Average sunshine in May
San José de la Montaña, Costa Rica

Average daylight in May / Average sunshine in May - San José de la Montaña, 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: 7h and 5min

The month with the most sunshine is March (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 7h and 0min).

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Average sunshine days in May
San José de la Montaña, Costa Rica

Average sunshine days in May - San José de la Montaña, Costa Rica
  • Average sunshine days in May: 2.8 days

The month with the most sunshine days is January (16.7 days).
The month with the least sunshine days is September (0.5 days).

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Average UV index in May
San José de la Montaña, Costa Rica

Average UV index in May - San José de la Montaña, Costa Rica
  • Average UV index in May: 5

The months with the highest UV index are January, February, March, April, June, July, September, October and December (UV index 6).
The months with the lowest UV index are May, August and November (UV index 5).

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Average cloud cover in May
San José de la Montaña, Costa Rica

Average cloud cover in May - San José de la Montaña, Costa Rica
  • Average cloud cover in May: 46

The month with the most cloud cover is October (Cloud cover 54).
The month with the least cloud cover is February (Cloud cover 19).

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Average visibility in May
San José de la Montaña, Costa Rica

Average visibility in May - San José de la Montaña, Costa Rica
  • Average visibility in May: 8km

The months with the highest visibility are February and March (10km).
The months with the lowest visibility are August, September, October and November (7km).

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San José de la Montaña, Costa Rica

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