January weather forecast
Tanna, Vanuatu

The New Year begins with rather hot and wet conditions in Tanna, Vanuatu. The daily readings fluctuate between highs of 28°C (82.4°F) and lows of 21°C (69.8°F), making it a moderately comfortable time for venturing outdoors. Precipitation is significant this month, with January recording the highest monthly rainfall of 334mm (13.15"). The seawater is warm, creating ideal conditions for water sports. The UV index is very high, necessitating protective measures when out in daytime.

Temperature

During January, Tanna observes a subtle ascent to a still moderately hot 28°C (82.4°F) from December's 27°C (80.6°F) in the average high-temperature. The nighttime temperature, during January, averages of 21°C (69.8°F).

Rainfall

In Tanna, Vanuatu, in January, it is raining for 19 days, with typically 334mm (13.15") of accumulated precipitation. Throughout the year, in Tanna, there are 213 rainfall days, and 2435mm (95.87") of precipitation is accumulated.

Sea temperature

January through March, with an average sea temperature of 28°C (82.4°F), are months with the warmest seawater.
Note: Swimming, diving, and other water-related activities in temperatures between 25°C (77°F) and 29°C (84.2°F) are considered highly enjoyable and satisfying for longer durations without uneasiness.

Daylight

In January, the average length of the day in Tanna is 13h and 10min.
On the first day of January in Tanna, Vanuatu, sunrise is at 05:06 and sunset at 18:24. On the last day of the month, sunrise is at 05:26 and sunset at 18:25 +11.

Sunshine

January, February, September through December, with an average of 7h of sunshine, are months with the most sunshine.

UV index

January through March, October through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, a daily UV index of 12 turns into the following recommendations:
Enforce all necessary safety measures, unprotected skin may suffer burns swiftly. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. After a swim or an outdoor workout, generously apply and regularly reapply a sunscreen with at least SPF 30, even if the day is cloudy. Warning! Sand and water reflections boost the intensity of UV exposure.