Nuku'alofa weather by month
Nuku'alofa runs from about 22°C in August to 27°C in February, with March the wettest month at 501 mm.
warmest month
February
27°C
coolest month
August
22°C
wettest month
March
501 mm
worst air month
October
8 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 27°C | 295 mm | 286 h | 5 |
| February | 27°C | 151 mm | 319 h | 5 |
| March | 27°C | 501 mm | 219 h | 5 |
| April | 26°C | 52 mm | 315 h | 5 |
| May | 25°C | 290 mm | 240 h | 6 |
| June | 23°C | 59 mm | 277 h | 7 |
| July | 22°C | 54 mm | 290 h | 5 |
| August | 22°C | 98 mm | 301 h | 5 |
| September | 22°C | 75 mm | 261 h | 7 |
| October | 24°C | 209 mm | 277 h | 8 |
| November | 24°C | 134 mm | 308 h | 5 |
| December | 27°C | 221 mm | 343 h | 5 |
About 3,436 hours of sun a year. Roughly 194 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.