AI-generatedSaint-Denis at a glance
- Best time
- Jun – Dec
- Warmest month
- Feb · 28°
- Warmest sea
- Feb · 28.2°
- Sunshine a year
- 2,890 h
- Rain a year
- 1,311 mm
- Climate
- Tropical
- Time zone
- UTC+4
- Elevation
- 44 m
Climate in Saint-Denis
Saint-Denis has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. February is the warmest month with average highs of 28 °C, while July is the coolest at 23 °C. With around 2,890 hours of sunshine a year, Saint-Denis is sunny; December is the sunniest month with 9.0 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Excellent
Best time to visit: June – December
Good forBeach & swimmingSightseeing & walks
A typical day in October
- Morning, 08:00: about 22°
- Midday, 13:00: about 24°
- Afternoon, 16:00: about 24°
- Evening, 20:00: about 23°
- Night, 23:00: about 22°
05:4818:20
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:34–06:17 · evening 17:51–18:34
- Blue hour
- Morning 05:25–05:34 · evening 18:34–18:43
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Saint-Denis in October?
In October, Saint-Denis is warm: daytime highs average 25 °C, and even at night it stays warm at around 21 °C. The sea averages 24.4 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 12 rainy days and 50 mm in total. All in all, October is an excellent month for a holiday in Saint-Denis.
More details for October
- Daylight
- 12 h 32 min05:48 – 18:20
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 15 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 46 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+4Indian/Reunion
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %90 %
- Few rainy daysweight 30 %46 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Rain jacket or umbrella
Sea temperature in Saint-Denis
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 23.5 – 25.2 °C
Swimming season: All year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Saint-Denis ranges from 23.6 °C in August to 28.2 °C in February. At 20 °C and more, the sea is warm enough for swimming all year round.
From December to September the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in February, eight out of ten years were between 27.5 and 28.9 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 27.8° | 26.9° | 28.4° | warm |
| FebruaryFeb | 28.2° | 27.5° | 28.9° | warm |
| MarchMar | 28.2° | 27.6° | 28.8° | warm |
| AprilApr | 27.7° | 27.1° | 28.2° | warm |
| MayMay | 26.7° | 26.2° | 27.3° | warm |
| JuneJun | 25.2° | 24.6° | 25.9° | pleasant |
| JulyJul | 24.1° | 23.4° | 24.6° | pleasant |
| AugustAug | 23.6° | 23.2° | 24.3° | pleasant |
| SeptemberSep | 23.7° | 23.0° | 24.5° | pleasant |
| OctoberOct | 24.4° | 23.5° | 25.2° | pleasant |
| NovemberNov | 25.6° | 25.0° | 26.3° | pleasant |
| DecemberDec | 27.1° | 26.2° | 27.9° | warm |
Sunshine hours in Saint-Denis
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 8.4 of 12.5 hours of daylight in Saint-Denis, 67 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Saint-Denis
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 12 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in January (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 15 min
- Light brown skin
- about 20 min
- Olive skin
- about 25 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Saint-Denis: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Saint-Denis has about 12 rainy days with 50 mm of rain in total.
Wind and clouds in Saint-Denis
How breezy and how cloudy Saint-Denis is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Saint-Denis typically peaks at 11 km/h during the day: Beaufort 2, light air.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 46 % of the sky over Saint-Denis: variable cloud, with about 8.4 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Saint-Denis
How often the day gets hot in Saint-Denis (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Saint-Denis has about 0 hot days, with an average daytime high of 25 °C: often muggy. The air feels warmer than the thermometer says: light, airy clothes and slow days help.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Saint-Denis
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (10+ muggy days)
WarmOctober: nights around 21°. Tropical nights: a fan or air conditioning helps. Muggy on about 15 days (dew point 18 °C or more).
The coolest nights are in August (19°), the warmest in February (25°). Tropical nights of 20 °C and more are the rule from September to July; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in August. It is muggy (dew point 18 °C or more) on about 237 days a year, mostly from October to June.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 65 | 27° | 25° | 27.8° | 8.1 h | 22 | 269 |
| FebruaryFeb | 63 | 28° | 25° | 28.2° | 8.0 h | 22 | 253 |
| MarchMar | 63 | 27° | 25° | 28.2° | 7.7 h | 22 | 205 |
| AprilApr | 66 | 27° | 24° | 27.7° | 7.5 h | 17 | 89 |
| MayMay | 68 | 25° | 22° | 26.7° | 7.2 h | 16 | 69 |
| JuneJun | 77 | 24° | 21° | 25.2° | 7.1 h | 12 | 43 |
| JulyJul | 75 | 23° | 20° | 24.1° | 7.3 h | 13 | 41 |
| AugustAug | 81 | 23° | 19° | 23.6° | 7.5 h | 11 | 37 |
| SeptemberSep | 85 | 24° | 20° | 23.7° | 8.1 h | 10 | 35 |
| OctoberOct | 82 | 25° | 21° | 24.4° | 8.4 h | 12 | 50 |
| NovemberNov | 74 | 26° | 22° | 25.6° | 8.9 h | 16 | 89 |
| DecemberDec | 70 | 27° | 24° | 27.1° | 9.0 h | 20 | 132 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
20.88° S, 55.45° E · 44 m · Indian/Reunion
Best time to visit Saint-Denis
The best time to visit Saint-Denis is from June to December. For a beach holiday with the sea above 21 °C, go in June and from August to October. For sightseeing, day trips and hiking, conditions are most comfortable in June and from August to October. Rain is most frequent in July and from November to May; the wettest month is January with 269 mm.
Saint-Denis through the seasons
How the weather changes over the seasons, with averages for each.
Saint-Denis in the dry season
Jun, Aug – Oct
Excellent
- 23–25 °C by day
- Sea 24 °C
- 8 h of sun a day
- 44 rainy days in all
Saint-Denis in the rainy season
Jul, Nov – May
Good
- 23–28 °C by day
- Sea 27 °C
- 8 h of sun a day
- 149 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Saint-Denis for you.
Your best months: August – October
Based on the climate averages; tap a month to see its details.
Compare two months in Saint-Denis
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and September bring similar holiday weather to Saint-Denis (score 82 and 85). In September, days are 1 °C cooler than in October. The sea is 1 °C cooler in September. September has 2 fewer rainy days.
| Month | October | September |
|---|---|---|
| Weather score | 82 | 85better |
| Day high | 25° | 24° |
| Night low | 21° | 20° |
| Sea | 24.4° | 23.7° |
| Sunshine | 8.4 h | 8.1 h |
| Rainy days | 12 | 10better |
| Rainfall | 50 mm | 35 mmbetter |
| Muggy days | 15 | 5better |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
Jun, Aug – Oct
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jun, Aug – Oct
15–28 °C and not too much rain
Rainy months
Jul, Nov – May
12 or more rainy days
Saint-Denis month by month
The typical weather for every month at a glance.
65January27° · Sea 28° · 8 h
In January, Saint-Denis is hot: daytime highs average 27 °C, and even at night it stays warm at around 25 °C. The sea averages 27.8 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 22 days, totalling 269 mm. The air is often humid and muggy. All in all, January is a good month for a holiday in Saint-Denis.
Saint-Denis in January63February28° · Sea 28° · 8 h
In February, Saint-Denis is hot: daytime highs average 28 °C, and even at night it stays warm at around 25 °C. The sea averages 28.2 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 22 days, totalling 253 mm. The air is often humid and muggy. All in all, February is a good month for a holiday in Saint-Denis.
Saint-Denis in February63March27° · Sea 28° · 8 h
In March, Saint-Denis is hot: daytime highs average 27 °C, and even at night it stays warm at around 25 °C. The sea averages 28.2 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 22 days, totalling 205 mm. The air is often humid and muggy. All in all, March is a good month for a holiday in Saint-Denis.
Saint-Denis in March66April27° · Sea 28° · 8 h
In April, Saint-Denis is warm: daytime highs average 27 °C, and even at night it stays warm at around 24 °C. The sea averages 27.7 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 17 days, totalling 89 mm. The air is often humid and muggy. All in all, April is a good month for a holiday in Saint-Denis.
Saint-Denis in April68May25° · Sea 27° · 7 h
In May, Saint-Denis is warm: daytime highs average 25 °C, and even at night it stays warm at around 22 °C. The sea averages 26.7 °C – lovely and warm for swimming. The sun shines for around 7 hours a day. It is the rainy season: rain falls on about 16 days, totalling 69 mm. The air is often humid and muggy. All in all, May is a good month for a holiday in Saint-Denis.
Saint-Denis in May77June24° · Sea 25° · 7 h
In June, Saint-Denis is warm: daytime highs average 24 °C, and even at night it stays warm at around 21 °C. The sea averages 25.2 °C – pleasant for swimming. The sun shines for around 7 hours a day. Rain is frequent, with about 12 rainy days and 43 mm in total. All in all, June is a good month for a holiday in Saint-Denis.
Saint-Denis in June75July23° · Sea 24° · 7 h
In July, Saint-Denis is warm: daytime highs average 23 °C, and nights cool down to about 20 °C. The sea averages 24.1 °C – pleasant for swimming. The sun shines for around 7 hours a day. Rain is frequent, with about 13 rainy days and 41 mm in total. All in all, July is a good month for a holiday in Saint-Denis.
Saint-Denis in July81August23° · Sea 24° · 8 h
In August, Saint-Denis is warm: daytime highs average 23 °C, and nights cool down to about 19 °C. The sea averages 23.6 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 37 mm in total. All in all, August is an excellent month for a holiday in Saint-Denis.
Saint-Denis in August85September24° · Sea 24° · 8 h
In September, Saint-Denis is warm: daytime highs average 24 °C, and nights cool down to about 20 °C. The sea averages 23.7 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 10 rainy days and 35 mm in total. All in all, September is an excellent month for a holiday in Saint-Denis.
Saint-Denis in September82October25° · Sea 24° · 8 h
In October, Saint-Denis is warm: daytime highs average 25 °C, and even at night it stays warm at around 21 °C. The sea averages 24.4 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 12 rainy days and 50 mm in total. All in all, October is an excellent month for a holiday in Saint-Denis.
Saint-Denis in October74November26° · Sea 26° · 9 h
In November, Saint-Denis is warm: daytime highs average 26 °C, and even at night it stays warm at around 22 °C. The sea averages 25.6 °C – pleasant for swimming. The sun shines for around 9 hours a day. It is the rainy season: rain falls on about 16 days, totalling 89 mm. The air is often humid and muggy. All in all, November is a good month for a holiday in Saint-Denis.
Saint-Denis in November70December27° · Sea 27° · 9 h
In December, Saint-Denis is warm: daytime highs average 27 °C, and even at night it stays warm at around 24 °C. The sea averages 27.1 °C – lovely and warm for swimming. With around 9 hours of sunshine a day, there is plenty of sun. It is the rainy season: rain falls on about 20 days, totalling 132 mm. The air is often humid and muggy. All in all, December is a good month for a holiday in Saint-Denis.
Saint-Denis in DecemberSaint-Denis compared
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Saint-Denis vs. Port Louis
In October the holiday weather in Saint-Denis and Port Louis is about equally good (score 82 vs. 84). During the day Port Louis is 2 °C warmer than Saint-Denis. The sea is about equally warm.
| in October | Saint-Denis | Port Louis |
|---|---|---|
| Holiday score | 82 | 84 |
| Daytime high | 25° | 27° |
| Sea | 24° | 24° |
| Sunshine | 8 h | 8 h |
| Rainy days | 12 | 10 |
| Best time | Jun – Dec | May – Nov |
Through the year
Planning a trip to Saint-Denis
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Saint-Denis in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Saint-Denis has its best school-holiday weather during October half-term (score 82) and its weakest during the Easter holidays (score 65).
- 65
Easter holidays
Mar – Apr
Good
- 27 °C by day
- Sea 28 °C
- 7.6 h of sun a day
- 19 rainy days a month
Keep in mind: Frequent rain, Storm season
- 70
May half-term
May – Jun
Good
- 25 °C by day
- Sea 26 °C
- 7.2 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 79
Summer holidays
Jul – Aug
Good
- 23 °C by day
- Sea 24 °C
- 7.4 h of sun a day
- 11 rainy days a month
Keep in mind: Frequent rain
- 82
October half-term
Oct
ExcellentBest holidays
- 25 °C by day
- Sea 24 °C
- 8.4 h of sun a day
- 12 rainy days a month
Good for: Beach & swimming, Sightseeing & walks
- 68
Christmas holidays
Dec – Jan
Good
- 27 °C by day
- Sea 27 °C
- 8.6 h of sun a day
- 21 rainy days a month
Keep in mind: Frequent rain, Storm season
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 12 h 10 min
- Distance
- 9,710 km
- Time zone
- UTC+4
- Jet lag
- About 3 days (3 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Saint-Denis lies in an area that cyclones from the south-western Indian Ocean can reach. The cyclone season runs from November to April, with most storms from January to March. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January: Peak
- February: Peak
- March: Peak
- April: Season
- May
- June
- July
- August
- September
- October
- November: Season
- December: Season
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM); not a forecast.
Frequently asked questions about Saint-Denis
When is the best time to visit Saint-Denis?
The best time to visit Saint-Denis is from June to December. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Saint-Denis?
The sea temperature in Saint-Denis ranges from 23.6 °C in August to 28.2 °C in February. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Saint-Denis in October?
Yes. In October the sea averages 24.4 °C – pleasant for swimming.
What is the warmest month in Saint-Denis?
February is the warmest month, with average highs of 28 °C and nights around 25 °C. July is the coolest month at 23 °C.
When does it rain most in Saint-Denis?
Rain is most frequent in July and from November to May; the wettest month is January with 269 mm. The driest month is September with 35 mm.
How many hours of sunshine does Saint-Denis get?
Saint-Denis gets around 2,890 hours of sunshine a year. The sunniest month is December with 9.0 hours a day; in June there are 7.1 hours a day.
What time zone is Saint-Denis in?
Saint-Denis uses the time zone Indian/Reunion, at UTC+4 all year.
How long is the flight from London to Saint-Denis?
A nonstop flight from London to Saint-Denis takes about 12 h 10 min, for a straight-line distance of about 9,710 km. Most routes need a change of planes, which adds time.
When is cyclone season in Saint-Denis?
Saint-Denis lies in an area that cyclones from the south-western Indian Ocean can reach. The cyclone season runs from November to April, with most storms from January to March. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Saint-Denis?
Saint-Denis has its best school-holiday weather during October half-term (score 82) and its weakest during the Easter holidays (score 65). Holiday ratings (0–100): Easter holidays 65, May half-term 70, Summer holidays 79, October half-term 82, Christmas holidays 68.
Near Saint-Denis
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