Weather by month for central Tonga, the best months to go and how Tonga's regions differ, scored from 10 years of climate data.
Jun, Jul, Aug, Sep
The highest month scores: comfortable temperatures, little rain and plenty of sun.
Highs 24°C to 25°C · 7–10 rain days
Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Still good weather, just not quite the top months.
Highs 25°C to 28°C · 11–20 rain days
Weather by month
Average highs and lows, rain days, sunshine and our month score out of 10.
| Month | High / low | Rain days | Sunshine | Score |
|---|---|---|---|---|
| January | 27°C / 26°C | 19 days (233 mm) | 10.4 h/day | 6.3/10 |
| February | 28°C / 26°C | 20 days (299 mm) | 9.6 h/day | 6.2/10 |
| March | 27°C / 26°C | 20 days (254 mm) | 9.3 h/day | 6.3/10 |
| April | 27°C / 26°C | 12 days (152 mm) | 9.6 h/day | 7.1/10 |
| May | 26°C / 25°C | 12 days (127 mm) | 9.4 h/day | 7.6/10 |
| Best month: June | 25°C / 24°C | 9 days (102 mm) | 9.1 h/day | 8.2/10 |
| Best month: July | 24°C / 23°C | 7 days (68 mm) | 9.2 h/day | 8.5/10 |
| Best month: August | 24°C / 23°C | 9 days (85 mm) | 9.1 h/day | 8.2/10 |
| Best month: September | 24°C / 23°C | 10 days (80 mm) | 9.9 h/day | 8.0/10 |
| October | 25°C / 24°C | 11 days (144 mm) | 10.2 h/day | 7.9/10 |
| November | 26°C / 25°C | 11 days (84 mm) | 11.3 h/day | 7.9/10 |
| December | 27°C / 25°C | 16 days (158 mm) | 10.9 h/day | 6.7/10 |
Figures for central Tonga; the country's best months are weighted across its cities. Best months are highlighted. How we score months
Month by month
27°C / 26°C · 19 rain days · 10.4 h sun
January is hot and wet, with highs around 27.4°C and rain on about 19 days. This is cyclone season in Tonga, so expect heavy, sudden downpours. The month scores 6.3, a good but not peak time. New Year's Day falls on 1 January.
28°C / 26°C · 20 rain days · 9.6 h sun
February stays hot at 27.7°C with the heaviest rain of the year, 299 mm over about 20 days. It's still cyclone season, so storms are possible. The score of 6.2 reflects this tougher, wetter stretch.
27°C / 26°C · 20 rain days · 9.3 h sun
March is similar to February: highs of 27.4°C and rain on nearly 20 days, with 254 mm total. Cyclone risk continues through this month. It scores 6.3, a good option if you don't mind humidity and rain.
27°C / 26°C · 12 rain days · 9.6 h sun
April cools slightly to 26.9°C and rain drops to about 12 days, with 152 mm. Conditions ease as cyclone season winds down, lifting the score to 7.1. Good Friday and Easter Monday fall on 3 and 6 April.
26°C / 25°C · 12 rain days · 9.4 h sun
May brings drier, cooler weather: 25.8°C highs, 12 rain days, and 127 mm of rain. This marks the start of the best season, scoring 7.6, with more sunshine and calmer skies than the first part of the year.
25°C / 24°C · 9 rain days · 9.1 h sun
June is noticeably cooler at 24.9°C, with just 9 rain days and 102 mm of rain. This dry, comfortable stretch scores 8.2. Emancipation Day is marked on 4 June.
24°C / 23°C · 7 rain days · 9.2 h sun
July is the driest and one of the coolest months, with highs of 24.1°C, only 7.3 rain days, and 68 mm of rain. It scores 8.5, the highest of the year. The Sovereign's birthday falls on 4 July.
24°C / 23°C · 9 rain days · 9.1 h sun
August stays dry and mild at 23.7°C, with about 9 rain days and 85 mm of rain. It remains part of the best season, scoring 8.2, with reliable sunshine around 9.1 hours a day.
24°C / 23°C · 10 rain days · 9.9 h sun
September warms slightly to 24°C with rain on about 10 days and 80 mm total. Sunshine rises to 9.9 hours. The month scores 8, still within the best period. The Heir to the Crown's birthday is 17 September.
25°C / 24°C · 11 rain days · 10.2 h sun
October brings 24.7°C highs, 10.6 rain days, and 144 mm of rain, with sun hours climbing to 10.2. It scores 7.9, a strong choice as temperatures start to rise again toward summer.
26°C / 25°C · 11 rain days · 11.3 h sun
November warms further to 25.6°C, with about 10.5 rain days and 84 mm of rain, plus the most sunshine of the year at 11.3 hours. It scores 7.9. Constitution Day is marked on 4 November.
27°C / 25°C · 16 rain days · 10.9 h sun
December heats up to 26.7°C and rain increases to nearly 16 days, with 158 mm total, as cyclone season approaches again. The score drops to 6.7. Christmas Day falls on 25 December, with a second holiday on 26 December, and the Coronation anniversary on 4 December.
By trip type
City sightseeing
June to September suit city trips best. Highs sit between 23.7°C and 24.9°C, and rain falls on only 7.3 to 9.9 days a month. July is the driest month, with 68 mm of rain.
Hiking & nature
July, August and September are the best hiking months, with June close behind. July has the fewest rain days (7.3) and highs near 24°C. August is the coolest month at 23.7°C, and September gets 9.9 sun hours.
Events calendar
Public holidays: New Year's Day (1 Jan)
Public holidays: Good Friday (3 Apr), Easter Monday (6 Apr)
Public holidays: Emancipation Day (4 Jun)
Public holidays: Birthday of the reigning Sovereign of Tonga (4 Jul)
Public holidays: Birthday of the Heir to the Crown of Tonga (17 Sep)
Public holidays: Constitution Day (4 Nov)
Public holidays: Anniversary of the Coronation of H.M. King George Tubou I (4 Dec), Christmas Day (25 Dec), Christmas Day (26 Dec)
Keep planning
FAQ
Yes, July is the highest-scoring month of the year, at 8.5 out of 10. It is also the driest month, with 68 mm of rain over about 7 rain days. Highs reach about 24°C and lows about 23°C, and there are about 9 hours of sunshine a day.
February is rated good, with a score of 6.2, but it is the wettest month. Expect about 299 mm of rain on nearly 20 days. It is also one of the warmest months, with highs near 28°C. You still get about 9.6 hours of sunshine a day, so rain often comes between sunny spells.
Yes, November is one of the best months, with a score of 7.9. It has the most sunshine of the year, at about 11.3 hours a day. Rain is fairly low, at 84 mm over about 10 days. Highs are about 26°C, so it feels warmer than mid-year.
The wettest months are January to March. Each has close to 20 rain days and between 233 mm and 299 mm of rain. December is also quite wet, with 158 mm on about 16 days. From June to September rain drops to between 68 mm and 102 mm a month, with 7 to 10 rain days.
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