January weather forecast
Portete, Costa Rica

January

Weather in January

January, like December, in Portete, Costa Rica, is another warm winter month, with an average temperature varying between 27.6°C (81.7°F) and 22.9°C (73.2°F).

Temperature

January, recording an average high temperature of 27.6°C (81.7°F) and a low temperature of 22.9°C (73.2°F), is Portete's coldest month.

Heat index

Throughout January, the heat index is computed to be a tropical 30°C (86°F). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In January, the average relative humidity is 72%.

Rainfall

In Portete, in January, during 17 rainfall days, 124mm (4.88") of precipitation is typically accumulated. Throughout the year, there are 241.5 rainfall days, and 1580mm (62.2") of precipitation is accumulated.

Daylight

In January, the average length of the day in Portete is 11h and 37min.
On the first day of January, sunrise is at 05:49 and sunset at 17:22. On the last day of the month, sunrise is at 05:54 and sunset at 17:36 CST.

Sunshine

The average sunshine in January is 7.7h.

UV index

January, February and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 6 during January translates into the following guidance:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Frequently asked questions

What time of the year is the coldest in Portete?
January stands out as Portete's coldest month, with an average high-temperature of 27.6°C (81.7°F) and a low-temperature of 22.9°C (73.2°F).
What is the usual temperature for Portete in January?
The high-temperature, in January, in Portete, records 27.6°C (81.7°F), while the low-temperature is 22.9°C (73.2°F). In January, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 30°C (86°F).
What is the average humidity in January in Portete?
In January, the average relative humidity is 72%.
How much does it rain in Portete in January?
In Portete, in January, it is raining for 17 days, with typically 124mm (4.88") of accumulated precipitation.
How many hours of daylight does Portete have in January?
The average day length in January in Portete is 11h and 37min.
When are sunrise and sunset in January in Portete?
In January, on the first day of the month, sunrise is at 05:49 and sunset at 17:22. On the last day of the month, in Portete, sunrise is at 05:54 and sunset at 17:36 CST.
How many hours of sunshine does Portete have in January?
In Portete, the average sunshine duration in January is 7.7h.
What are the months with the lowest UV index in Portete?
The months with the lowest UV index in Portete, Costa Rica, are January, February and December, with an average maximum UV index of 6.
What is the UV index reading in January in Portete?
In January, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January
Portete, Costa Rica
  • Average high temperature in January: 27.6°C

The warmest month (with the highest average high temperature) is September (30°C).
The month with the lowest average high temperature is January (27.6°C).

  • Average low temperature in January: 22.9°C

The months with the highest average low temperature are May and June (25.3°C).
The coldest month (with the lowest average low temperature) is February (22.8°C).

Average pressure in January
Portete, Costa Rica
  • Average pressure in January: 1013.1mbar

The month with the highest atmospheric pressure is January (1013.1mbar).
The month with the lowest atmospheric pressure is October (1010.9mbar).

Average wind speed in January
Portete, Costa Rica
  • Average wind speed in January: 9.1km/h

The windiest month (with the highest average wind speed) is November (9.7km/h).
The calmest month (with the lowest average wind speed) is September (7.4km/h).

Average humidity in January
Portete, Costa Rica
  • Average humidity in January: 72%

The months with the highest relative humidity are May and June (74%).
The month with the lowest relative humidity is September (71%).

Average rainfall in January
Portete, Costa Rica
  • Average rainfall in January: 124mm

The wettest month (with the highest rainfall) is July (203mm).
The driest month (with the least rainfall) is April (65mm).

Average rainfall days in January
Portete, Costa Rica
  • Average rainfall days in January: 17 days

The month with the highest number of rainy days is July (25.8 days).
The month with the least rainy days is February (15.7 days).

Average daylight in January /
Average sunshine in January
Portete, Costa Rica
  • Average daylight in January: 11h 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 36min).

  • Average sunshine in January: 7h and 4min

The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 18min).

Average sunshine days in January
Portete, Costa Rica
  • Average sunshine days in January: 10.6 days

The month with the most sunshine days is January (10.6 days).
The month with the least sunshine days is July (3.2 days).

Average UV index in January
Portete, Costa Rica
  • Average UV index in January: 6

The months with the highest UV index are March, April, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February and December (UV index 6).

Average cloud cover in January
Portete, Costa Rica
  • Average cloud cover in January: 43

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is September (Cloud cover 30).

Average visibility in January
Portete, Costa Rica
  • Average visibility in January: 10km

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).

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