Nuku'alofa weather by month & the best time to visit
Tonga · beach resort · tropical rainforest climate
The best time to visit Nuku'alofa is July — its sunniest month (Sunshine Score 82/100), with August and September close behind. Nuku'alofa averages about 2,598 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 67 mm of rain in July.
When is the best time to visit Nuku'alofa?
For sunshine, the best time to visit Nuku'alofa is July, then August and September. The dullest month is January (67/100, 197 mm of rain). The full month-by-month picture is in the table below.
How sunny is Nuku'alofa?
Nuku'alofa gets a lot of sun: around 2,598 hours a year. Conditions barely change through the year — only 15 Sunshine Score points separate July from January. It ranks #5 of 5 destinations in Tonga for annual sunshine, below the national median of 2,663 hours. The year's 1,518 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 67 | 27° / 81°F | 26° / 79°F | 197 mm | 13 | 28° / 82°F |
| February | 67 | 27° / 81°F | 26° / 79°F | 197 mm | 12 | 28° / 82°F |
| March | 67 | 27° / 81°F | 26° / 79°F | 197 mm | 11 | 28° / 82°F |
| April | 67 | 26° / 79°F | 26° / 79°F | 170 mm | 8 | 27° / 81°F |
| May | 74 | 25° / 77°F | 24° / 75°F | 112 mm | 6 | 27° / 81°F |
| June | 76 | 24° / 75°F | 23° / 73°F | 100 mm | 5 | 26° / 79°F |
| July | 82 | 23° / 73°F | 22° / 72°F | 67 mm | 6 | 24° / 75°F |
| August | 79 | 23° / 73°F | 22° / 72°F | 81 mm | 7 | 24° / 75°F |
| September | 79 | 23° / 73°F | 22° / 72°F | 83 mm | 8 | 24° / 75°F |
| October | 78 | 24° / 75°F | 23° / 73°F | 88 mm | 10 | 25° / 77°F |
| November | 74 | 25° / 77°F | 24° / 75°F | 111 mm | 11 | 26° / 79°F |
| December | 73 | 26° / 79°F | 25° / 77°F | 115 mm | 12 | 27° / 81°F |
Sea temperature in Nuku'alofa by month
The sea off Nuku'alofa is warmest in January at around 28°C / 82°F, and coolest in July at 24°C / 75°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Nuku'alofa: questions and answers
What kind of destination is Nuku'alofa?
Nuku'alofa is a beach resort in Tonga with a tropical rainforest climate — the sea reaches 28°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Nuku'alofa get a year?
Nuku'alofa gets about 2,598 hours of sunshine a year, at its best around July.
When is the best time to visit Nuku'alofa?
The sunniest time to visit Nuku'alofa is July, when the Sunshine Score peaks at 82/100 (with August and September close behind). Expect daytime highs around 23°C / 73°F.
What is the least sunny month in Nuku'alofa?
January is the least sunny month in Nuku'alofa, scoring 67/100 with about 197 mm of rain.
What is the sea temperature in Nuku'alofa?
The sea in Nuku'alofa ranges from about 24°C (July) to 28°C (January). Month-by-month sea temperatures are on this page.
How strong is the sun in Nuku'alofa?
The typical midday UV index in Nuku'alofa peaks around 13 (extreme) in January, easing to about 5 (moderate) in June. Month-by-month midday UV values are in the UV column of the table on this page.
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