Climate of Tonga — Month by Month
Country-wide average for Tonga. Part of Polynesia, Oceania.
Located in Polynesia, Oceania, Tonga has a consistently warm climate. Country-wide average temperatures range from 21°C / 69.8°F in July to 25.5°C / 77.9°F in January, with annual rainfall totalling around 1450 mm / 57.1 in — driest in July (40 mm / 1.6 in), wettest in January (200 mm / 7.9 in). These are national averages; regional variation can be substantial, especially in geographically diverse countries. For city-level detail see the cities section below, and for state or province breakdowns follow the subdivisions link if available.
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| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 25.5°C77.9°F | 200 mm7.9″ | Tropical |
| February | 25.5°C77.9°F | 200 mm7.9″ | Tropical |
| March | 25°C77°F | 180 mm7.1″ | Tropical |
| April | 24.5°C76.1°F | 150 mm5.9″ | Tropical |
| May | 23°C73.4°F | 100 mm3.9″ | Tropical |
| June | 22°C71.6°F | 60 mm2.4″ | — |
| July | 21°C69.8°F | 40 mm1.6″ | Sunny & Warm, Sunny & Mild |
| August | 21°C69.8°F | 40 mm1.6″ | Sunny & Warm, Sunny & Mild |
| September | 22°C71.6°F | 60 mm2.4″ | — |
| October | 23°C73.4°F | 100 mm3.9″ | Tropical |
| November | 24°C75.2°F | 140 mm5.5″ | Tropical |
| December | 25°C77°F | 180 mm7.1″ | Tropical |
Frequently asked questions
What is the best time to visit Tonga?
The best months to visit Tonga for sunny, dry weather are July, August. The warmest month is January (25.5°C / 77.9°F average), and the driest is July (~40 mm / 1.6 in rainfall).
What is the climate of Tonga?
Tonga has country-wide monthly average temperatures ranging from 21°C / 69.8°F in July to 25.5°C / 77.9°F in January. Annual rainfall averages about 1450 mm / 57.1 in, with the wettest month being January (200 mm / 7.9 in) and the driest July (40 mm / 1.6 in). Regional variation within Tonga can be significant — see subdivision or city pages for detail.
What is the hottest month in Tonga?
The hottest month in Tonga is January, with a country-wide average temperature of 25.5°C / 77.9°F.
What is the coldest month in Tonga?
The coldest month in Tonga is July, with a country-wide average temperature of 21°C / 69.8°F.
When does it rain most in Tonga?
The wettest month in Tonga is January, averaging about 200 mm / 7.9 in of rain. The driest is July with about 40 mm / 1.6 in.