January weather forecast
Tamarindo, Costa Rica

January in Tamarindo, Costa Rica is predominantly lush and sunny. The scant rainfall of 3mm (0.12") makes this a relatively dry month with few rainy days. Following a trend from the previous months, it welcomes with ample sunlight facilitating inviting weather for outdoor activities. The persistence of sunny days helps with warming the sea's surface temperature making the beach activities pleasurable. As the month progresses, a gradual increase in temperature is detected indicating a transition towards warmer months.

Temperature

Welcoming January, Tamarindo notes an average high-temperature of a still tropical 32°C (89.6°F), nearly consistent with December's 31°C (87.8°F). Tamarindo's average low-temperature during January nights is observed to be a warm 23°C (73.4°F).

Rainfall

In January, in Tamarindo, the rain falls for 7 days. Throughout January, 3mm (0.12") of precipitation is accumulated. In Tamarindo, during the entire year, the rain falls for 171 days and collects up to 1853mm (72.95") of precipitation.

Sea temperature

January through March and December, with an average sea temperature of 27°C (80.6°F), are months with the coldest seawater.
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

The average length of the day in January in Tamarindo is 11h and 36min.
On the first day of January, sunrise is at 06:00 and sunset at 17:32. On the last day of the month, sunrise is at 06:06 and sunset at 17:47 CST.

Sunshine

January through April, with an average of 8h of sunshine, are months with the most sunshine.

UV index

In January, the average daily maximum UV index is 11. A UV Index value of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 11 during January leads to these advisories:
Adopt every precaution of necessity, unprotected skin and eyes may suffer burns instantly. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Prompt application of a broad-spectrum sunscreen, SPF 30+, is necessary after a swim or an outdoor workout and it should be re-applied every two hours. Alert! The Sun's UV rays are heightened by the reflection of sand and water.