January Weather in Aserri, Costa Rica

Last updated: August 23, 2025

In January, the average temperature in Aserri, Costa Rica is a pleasant 17°C (63°F). Expect lows of 11°C (51°F) and highs reaching up to 24°C (76°F). With 35 mm (1.4 in) of precipitation spread over 6 days, you'll want to be prepared for some light rain. The average humidity hovers around 68%, making it a comfortable time to explore this beautiful destination!

January Temperature in Aserri

In January in Aserri, the average temperature is 17°C (63°F), with maximums reaching 24°C (76°F) and minimums dipping as low as 11°C (51°F). This moderate climate makes it an ideal time for travelers to explore and enjoy outdoor activities in Aserri.

January Weather in Aserri: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Aserri, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aserri, January typically has an average temperature of 17°C (63°F), with highs reaching up to 24°C (76°F) and lows dropping to around 11°C (51°F).

Data source: Temperature data for Aserri generated using information from the Copernicus Climate Change Service.

January Precipitation in Aserri

In Aserri in January, the total precipitation amount is 35 mm (1.4 in) spread over a period of 6 days.

January Precipitation Trends in Aserri

The chart displays monthly precipitation patterns in Aserri, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Aserri, January typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Aserri

In Aserri in January humidity is 68%. With an average temperature of 17°C (63°F), this humidity feels like a warm, gentle embrace, making it perfect for exploring local attractions but slightly challenging for outdoor activities during the hottest parts of the day.

January Average Humidity in Aserri

This chart illustrates the average monthly humidity levels in Aserri, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Aserri is approximately 68%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Aserri

In Aserri in January, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Aserri.

Maximum UV Index Levels in Aserri for January

The chart shows the monthly maximum UV Index (UVI) for Aserri in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Aserri typically reaches 12, which falls under the extreme exposure category.

Data source: Aserri January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Aserri Compares to Other Months

Weather in Aserri varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Aserri, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Aserri, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (63°F)	35 mm (1.4 inches)	68%	extreme
February Weather	18°C (64°F)	19 mm (0.8 inches)	68%	extreme
March Weather	18°C (65°F)	28 mm (1.1 inches)	66%	extreme
April Weather	18°C (65°F)	155 mm (6.1 inches)	67%	extreme
May Weather	18°C (65°F)	532 mm (21.0 inches)	69%	extreme
June Weather	18°C (66°F)	399 mm (15.7 inches)	84%	extreme
July Weather	18°C (65°F)	315 mm (12.4 inches)	85%	extreme
August Weather	18°C (65°F)	403 mm (15.9 inches)	82%	extreme
September Weather	18°C (65°F)	508 mm (20.0 inches)	81%	extreme
October Weather	18°C (64°F)	601 mm (23.7 inches)	80%	extreme
November Weather	18°C (64°F)	272 mm (10.7 inches)	80%	extreme
December Weather	17°C (64°F)	78 mm (3.1 inches)	72%	extreme