January weather forecast
Atenas, Costa Rica

In Atenas, Costa Rica, the start of the new calendar year heralds a period of high temperatures and moderate rainfall. There's a marked presence of solar radiation during this period, and it's a season of considerably dry weather patterns. January gets less rainfall compared to the impending months, with rainfall measurements showing amounts of 21mm (0.83"). Relative humidity values also show moderation, hinting at an overall comfortable weather scenario. Wind speeds are notable, turning the tropical heat of Atenas more bearable and the overall weather pleasant.

Temperature

The onset of January brings with it an average high-temperature of a still warm 27.3°C (81.1°F), showing a negligible variation from the month before. January brings with it a nighttime average temperature of 16.8°C (62.2°F).

Heat index

In January, the heat index is evaluated at a tropical 30°C (86°F). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to 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

The average relative humidity in January in Atenas is 75%.

Rainfall

In Atenas, in January, during 11.3 rainfall days, 21mm (0.83") of precipitation is typically accumulated. Throughout the year, there are 272 rainfall days, and 2217mm (87.28") of precipitation is accumulated.

Daylight

The average length of the day in January is 11h and 37min.
On the first day of January, sunrise is at 05:54 and sunset at 17:27. On the last day of the month, sunrise is at 05:59 and sunset at 17:41 CST.

Sunshine

The average sunshine in January in Atenas is 8.3h.

UV index

The months with the highest UV index in Atenas are January through April, June, July, September, October and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 6 in January, converts into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.