Saint-Denis (Réunion) in September
In September, Saint-Denis (Réunion) averages 25°C (77°F) during the day and 20°C (68°F) at night, with frequent rain — about 18 days of the month see precipitation (39 mm total).
ShoulderConditions are comfortable for sightseeing without being sweltering. Expect daily rain or showers, often in heavy bursts.
September offers comfortable temperatures in Saint-Denis (Réunion), with some rain to plan around.
How September compares to the rest of the year in Saint-Denis (Réunion)
September is in the middle of the year for warmth in Saint-Denis (Réunion) (9th of 12) and one of the driest months (12th of 12). Daytime temperature runs 2°C below the annual average (26°C). September runs 1°C warmer than August (24°C) and warms a further 1°C into October (26°C).
September sunrise & sunset in Saint-Denis (Réunion)
Times shown for Saint-Denis (Réunion) local time (Indian/Reunion), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Saint-Denis (Réunion) — September
Golden-hour and blue-hour windows for the 15th of September, in Saint-Denis (Réunion)'s local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Saint-Denis (Réunion) in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Saint-Denis (Réunion)'s popularity.
Crowds & pricing — September in Saint-Denis (Réunion)
Saint-Denis (Réunion) is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — September in Saint-Denis (Réunion)
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Saint-Denis (Réunion) — September
Across the year Saint-Denis (Réunion)'s sea swings from 24.5°C (August) to 28.3°C (February) — September sits at 24.8°C.
Saint-Denis (Réunion) in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 28°C / 83°F | 25°C / 77°F | 390 mm | 28 | — |
| February | 28°C / 83°F | 25°C / 77°F | 296 mm | 26 | — |
| March | 28°C / 83°F | 25°C / 77°F | 310 mm | 28 | — |
| April | 28°C / 82°F | 24°C / 75°F | 128 mm | 25 | — |
| May | 26°C / 78°F | 22°C / 71°F | 48 mm | 23 | — |
| June | 24°C / 76°F | 20°C / 68°F | 53 mm | 20 | — |
| July | 24°C / 75°F | 19°C / 66°F | 38 mm | 19 | — |
| August | 24°C / 75°F | 19°C / 67°F | 39 mm | 20 | — |
| September | 25°C / 77°F | 20°C / 68°F | 39 mm | 18 | — |
| October | 26°C / 79°F | 21°C / 70°F | 68 mm | 21 | — |
| November | 27°C / 80°F | 23°C / 73°F | 91 mm | 24 | — |
| December | 28°C / 83°F | 24°C / 75°F | 154 mm | 25 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Saint-Denis (Réunion) in September →
Frequently asked questions
How hot is Saint-Denis (Réunion) in September?
In September, Saint-Denis (Réunion) averages a high of 25°C (77°F) and a low of 20°C (68°F) — generally warm.
Does it rain a lot in Saint-Denis (Réunion) in September?
September is quite rainy in Saint-Denis (Réunion), with about 18 rainy days on average.
Is September a good time to visit Saint-Denis (Réunion)?
September is warm but on the rainy side. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Saint-Denis (Réunion) in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Saint-Denis (Réunion) for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.