Joinville weather by month
Joinville runs from about 16°C in July to 26°C in February, with January the wettest month at 444 mm.
warmest month
February
26°C
coolest month
July
16°C
wettest month
January
444 mm
worst air month
August
14 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 25°C | 444 mm | 277 h | 10 |
| February | 26°C | 244 mm | 260 h | 9 |
| March | 25°C | 153 mm | 278 h | 9 |
| April | 23°C | 153 mm | 229 h | 8 |
| May | 21°C | 171 mm | 216 h | 9 |
| June | 19°C | 41 mm | 249 h | 9 |
| July | 16°C | 196 mm | 169 h | 12 |
| August | 17°C | 61 mm | 268 h | 14 |
| September | 20°C | 117 mm | 216 h | 11 |
| October | 22°C | 161 mm | 247 h | 10 |
| November | 23°C | 222 mm | 213 h | 8 |
| December | 23°C | 442 mm | 251 h | 9 |
About 2,873 hours of sun a year. Roughly 211 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.