Constantine weather by month
Constantine runs from about 8°C in December to 28°C in July, with February the wettest month at 98 mm.
warmest month
July
28°C
coolest month
December
8°C
wettest month
February
98 mm
worst air month
March
11 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 9°C | 31 mm | 246 h | 6 |
| February | 10°C | 98 mm | 233 h | 5 |
| March | 12°C | 21 mm | 324 h | 11 |
| April | 14°C | 28 mm | 307 h | 11 |
| May | 19°C | 17 mm | 365 h | 8 |
| June | 24°C | 2 mm | 373 h | 10 |
| July | 28°C | 1 mm | 406 h | 9 |
| August | 27°C | 10 mm | 380 h | 10 |
| September | 22°C | 35 mm | 297 h | 9 |
| October | 20°C | 25 mm | 301 h | 7 |
| November | 14°C | 15 mm | 268 h | 6 |
| December | 8°C | 49 mm | 235 h | 8 |
About 3,735 hours of sun a year. Roughly 35 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.