Naha weather by month
Naha runs from about 18°C in January to 30°C in July, with June the wettest month at 418 mm.
warmest month
July
30°C
coolest month
January
18°C
wettest month
June
418 mm
worst air month
March
13 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 18°C | 45 mm | 246 h | 8 |
| February | 20°C | 65 mm | 220 h | 11 |
| March | 19°C | 122 mm | 238 h | 13 |
| April | 23°C | 286 mm | 257 h | 9 |
| May | 24°C | 277 mm | 267 h | 8 |
| June | 26°C | 418 mm | 243 h | 6 |
| July | 30°C | 110 mm | 367 h | 6 |
| August | 29°C | 118 mm | 365 h | 5 |
| September | 28°C | 253 mm | 265 h | 5 |
| October | 27°C | 219 mm | 284 h | 7 |
| November | 23°C | 178 mm | 234 h | 9 |
| December | 18°C | 62 mm | 206 h | 8 |
About 3,192 hours of sun a year. Roughly 205 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 2026-05-23. Full method, licences and the list of sources we rejected are on the methodology page.