| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 29.9° | 23.5° | 316.8mm | 17.2 | 58 |
| February | 30.2° | 23.4° | 269.8mm | 16.3 | 57 |
| March | 29.8° | — | 240.1mm | 16.4 | 59 |
| April | 29.2° | 22.2° | 164.1mm | 13.7 | 64 |
| May | 27.5° | 20° | 96mm | 11.9 | 74 |
| June | 26° | 18.2° | 76.1mm | 11.8 | 76 |
| July | 25.2° | 17.8° | 53.6mm | 12.2 | 76 |
| August | 25.3° | 18.2° | 52.4mm | 11.3 | 77 |
| September | 25.8° | 17.9° | 52.2mm | 10.9 | 78 |
| October | 26.8° | 19.5° | 35.7mm | 9.9 | 80 |
| November | 28.1° | 20.5° | 66.5mm | 8.7 | 78 |
| December | 29.2° | 22.2° | 145.2mm | 13.2 | 65 |
January in Saint-Denis averages a daily high of 29.9°C with nights around 23.5°C. Expect roughly 17.2 wet days totalling 316.8mm. Generally workable, with some weather to plan around.
February in Saint-Denis averages a daily high of 30.2°C with nights around 23.4°C. Expect roughly 16.3 wet days totalling 269.8mm. Generally workable, with some weather to plan around.
March in Saint-Denis averages a daily high of 29.8°C. Expect roughly 16.4 wet days totalling 240.1mm. Generally workable, with some weather to plan around.
April in Saint-Denis averages a daily high of 29.2°C with nights around 22.2°C. Expect roughly 13.7 wet days totalling 164.1mm. Generally workable, with some weather to plan around.
May in Saint-Denis averages a daily high of 27.5°C with nights around 20°C. Expect roughly 11.9 wet days totalling 96mm. Generally workable, with some weather to plan around.
June in Saint-Denis averages a daily high of 26°C with nights around 18.2°C. Expect roughly 11.8 wet days totalling 76.1mm. Comfortable conditions for being outdoors all day.
July in Saint-Denis averages a daily high of 25.2°C with nights around 17.8°C. Expect roughly 12.2 wet days totalling 53.6mm. Comfortable conditions for being outdoors all day.
August in Saint-Denis averages a daily high of 25.3°C with nights around 18.2°C. Expect roughly 11.3 wet days totalling 52.4mm. Comfortable conditions for being outdoors all day.
September in Saint-Denis averages a daily high of 25.8°C with nights around 17.9°C. Expect roughly 10.9 wet days totalling 52.2mm. Comfortable conditions for being outdoors all day.
October in Saint-Denis averages a daily high of 26.8°C with nights around 19.5°C. Expect roughly 9.9 wet days totalling 35.7mm. Comfortable conditions for being outdoors all day.
November in Saint-Denis averages a daily high of 28.1°C with nights around 20.5°C. Expect roughly 8.7 wet days totalling 66.5mm. Comfortable conditions for being outdoors all day.
December in Saint-Denis averages a daily high of 29.2°C with nights around 22.2°C. Expect roughly 13.2 wet days totalling 145.2mm. Generally workable, with some weather to plan around.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Saint-Denis peaks at 80.
Based on 30 years of records, May–November scores highest for comfort in Saint-Denis, balancing daytime temperature against rainfall.
February is the warmest, averaging a daily high of 30.2°C.
January is the wettest, averaging 316.8mm of rain across roughly 17.2 wet days.
July is the coolest month, with average daily highs around 25.2°C.