December weather forecast
Fortuna, Costa Rica

December indicates a noticeable reduction in the rainfall, being registered at 271mm (10.67"), an indicator for the start of the dry season in Fortuna, Costa Rica. The temperature range remains steady, offering a milder climate, ideal for exploring the region. Shortened daylight hours and a slight drop in the UV index provide relief to individuals sensitive to intense sunlight. As it transitions into the New Year, similar weather trends are anticipated.

Temperature

Fortuna, Costa Rica, observes an average high-temperature of a still moderately hot 29°C (84.2°F) in December, barely different from 28°C (82.4°F) in November. Fortuna's average low-temperature in December is measured at a pleasant 21°C (69.8°F).

Rainfall

In December, the rain falls for 14 days. Throughout December, 271mm (10.67") of precipitation is accumulated. In Fortuna, Costa Rica, during the entire year, the rain falls for 190 days and collects up to 3508mm (138.11") of precipitation.

Daylight

December has the shortest days of the year in Fortuna, Costa Rica, with an average of 11h and 30min of daylight.
On the first day of the month, sunrise is at 05:41 and sunset at 17:14. On the last day of December, in Fortuna, Costa Rica, sunrise is at 05:56 and sunset at 17:27 CST.

Sunshine

In December, the average sunshine is 6h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 10. A UV Index value of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, an average UV index of 10 transforms into the following instructions:
Protection should always be a priority. Skin and eyes are vulnerable without it. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Being cautious under the Sun means limiting direct exposure, especially if you have a tendency to burn. And always wear sunscreen with 30 SPF or higher.