January weather forecast
Chacarita, Costa Rica

January is a hot winter month in Chacarita, Costa Rica, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 21.9°C (71.4°F).
The perfect water temperature of 28°C (82.4°F) with 4mm (0.16") of accumulated rainfall and only 3.8 rainfall days, makes January a great period for swimming and other water activities.

Temperature

Chacarita's shift into January is marked by a subtle change to a tropical 30.8°C (87.4°F) from December's 29.7°C (85.5°F) in temperature. Chacarita witnesses an average low-temperature of 21.9°C (71.4°F) throughout the month of January.

Heat index

The heat index value during January is appraised at a torrid 36°C (96.8°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion 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 particularly meaningful for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The average relative humidity in January is 68%.

Rainfall

In January, the rain falls for 3.8 days. Throughout January, 4mm (0.16") of precipitation is accumulated. In Chacarita, during the entire year, the rain falls for 218.6 days and collects up to 1456mm (57.32") of precipitation.

Sea temperature

In Chacarita, in January, the average water temperature is 28°C (82.4°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Chacarita, the average length of the day in January is 11h and 37min.
On the first day of the month, sunrise is at 05:55 and sunset at 17:29. On the last day of January, in Chacarita, sunrise is at 06:01 and sunset at 17:43 CST.

Sunshine

In Chacarita, Costa Rica, the average sunshine in January is 8.3h.

UV index

The months with the highest UV index in Chacarita, Costa Rica, are January through September and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 7 in January transforms into the following instructions:
Guard oneself from overexposure. Defence against sun injury is vital. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Alert! The Sun's UV rays are heightened by the reflection of sand and water.