January Weather in Vaini, Tonga

Last updated: August 31, 2025

In Vaini, Tonga, the average temperature in January hovers around 26°C (79°F), with a minimum of 24°C (75°F) and a maximum reaching 28°C (83°F). This month experiences significant precipitation, with about 235 mm (9.2 in) falling over 17 days. Coupled with an average humidity of 83%, you can expect a warm and humid atmosphere during your stay!

January Temperature in Vaini

In January in Vaini, the average temperature is a pleasant 26°C (79°F). Maximums can reach up to 28°C (83°F), while minimums can dip to as low as 24°C (75°F). This mild climate makes it an ideal time to explore and enjoy outdoor activities.

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

The chart illustrates January temperature patterns in Vaini, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vaini, January typically has an average temperature of 26°C (79°F), with highs reaching up to 28°C (83°F) and lows dropping to around 24°C (75°F).

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

January Precipitation in Vaini

In Vaini in January, the precipitation amount is 235 mm (9.2 in) over a span of 17 days.

January Precipitation Trends in Vaini

The chart displays monthly precipitation patterns in Vaini, 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 Vaini, January typically receives around 235 mm (9.2 inches) of precipitation spread over approximately 17 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 Vaini

In Vaini in January, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

January Average Humidity in Vaini

This chart illustrates the average monthly humidity levels in Vaini, 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 Vaini is approximately 83%, 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 Vaini

In Vaini in January, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Vaini.

Maximum UV Index Levels in Vaini for January

The chart shows the monthly maximum UV Index (UVI) for Vaini 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 Vaini typically reaches 16, which falls under the extreme exposure category.

Data source: Vaini 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 Vaini Compares to Other Months

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

This table compares monthly weather conditions in Vaini, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	235 mm (9.2 inches)	83%	extreme
February Weather	26°C (80°F)	294 mm (11.6 inches)	82%	extreme
March Weather	26°C (79°F)	300 mm (11.8 inches)	81%	extreme
April Weather	26°C (79°F)	238 mm (9.4 inches)	82%	extreme
May Weather	25°C (76°F)	196 mm (7.7 inches)	81%	very high
June Weather	24°C (75°F)	101 mm (4.0 inches)	74%	high
July Weather	23°C (73°F)	113 mm (4.4 inches)	76%	very high
August Weather	22°C (73°F)	83 mm (3.3 inches)	76%	very high
September Weather	23°C (73°F)	135 mm (5.3 inches)	78%	extreme
October Weather	23°C (74°F)	135 mm (5.3 inches)	81%	extreme
November Weather	24°C (76°F)	88 mm (3.5 inches)	82%	extreme
December Weather	25°C (78°F)	163 mm (6.4 inches)	83%	extreme