Piton Saint-Leu weather in September

In September, Piton Saint-Leu sees average daytime highs of 22°C and overnight lows near 19°C, with 32 mm of rain across 9 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Piton Saint-Leu's 4th-clearest and 7th-windiest month. For the whole year in context, see Piton Saint-Leu's year-round climate.

Daytime high
22°
10th warmest
Overnight low
19°
3rd coldest
Rainfall
32 mm
9 wet days
Daylight
11 h 54 min
6:17 AM – 6:09 PM
Cloud cover
40%
4th clearest
Wind
9 km/h
7th windiest
Solar energy
6.06 kWh/m²
Travel score
7.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical September day in Piton Saint-Leu reaches about 22°C in the afternoon and slips back to 19°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 23°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

15°18°20°23°25°151015202530
Avg high (°C)Avg low (°C)
12219
22219
32219
42219
52219
62219
72219
82219
92219
102219
112219
122219
132219
142219
152219
162219
172219
182219
192219
202219
212219
222219
232219
242219
252219
262219
272219
282219
292219
302219

Piton Saint-Leu weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 24°20622.713.14.7
Feb26° / 24°18718.912.75.0
Mar26° / 24°15417.612.25.6
Apr25° / 23°6012.111.56.6
May24° / 21°458.5117.5
Jun22° / 20°246.310.77.7
Jul22° / 19°185.810.87.6
Aug21° / 19°287.511.37.3
Sep22° / 19°32911.97.1
Oct23° / 20°441212.56.8
Nov24° / 21°6713.4136.5
Dec25° / 23°1241913.35.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 30% of September, with mostly cloudy or overcast conditions the remaining 19%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28416
38515
48515
58515
68515
78416
88317
98317
108317
118218
128218
138218
148218
158020
168020
178020
188020
198020
208020
218020
228020
238020
248020
257921
268020
277921
287921
297822
307723

Chance of precipitation in September

Any precipitation

Piton Saint-Leu gets around 32 mm of rain over 9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 31% and peaks near 36% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
126
226
326
426
526
626
726
827
927
1028
1129
1229
1329
1430
1530
1631
1732
1832
1933
2033
2134
2234
2334
2435
2535
2635
2736
2836
2936
3036

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 49% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11251361
21251361
31151371
41150381
51050391
61049401
71048411
8948421
9947431
10946442
11845452
12844462
13844462
14743472
15742482
16742493
17741503
18640513
19639523
20638533
21637543
22636553
23535564
24535564
25534574
26433594
27433585
28432586
29331606
30330607

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over September. Sunrise moves from 6:31 AM to 6:03 AM, and sunset from 6:06 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:316:06
211.66:306:06
311.66:296:06
411.66:286:06
511.76:276:07
611.76:276:07
711.76:266:07
811.76:256:07
911.76:246:08
1011.86:236:08
1111.86:226:08
1211.86:216:08
1311.86:206:09
1411.86:196:09
1511.96:186:09
1611.96:176:09
1711.96:166:10
1811.96:156:10
1911.96:146:10
2012.06:136:10
2112.06:126:11
2212.06:116:11
2312.06:106:11
2412.06:096:12
2512.16:086:12
2612.16:076:12
2712.16:066:12
2812.16:056:13
2912.26:046:13
3012.26:036:13

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.06 kWh/m².

For context, solar energy here swings from a low near 4.01 kWh/m² to a high of 7.21 kWh/m² in November across the year — September's 6.06 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.6Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
136.0Bright
146.0Bright
156.0Intense
166.0Intense
176.1Intense
186.1Intense
196.2Intense
206.2Intense
216.2Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.4Intense
276.4Intense
286.4Intense
296.5Intense
306.5Intense
Planning a trip in September

Hazard calendar for Piton Saint-Leu

In seasonPeak

None of Piton Saint-Leu's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Piton Saint-Leu sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Piton Saint-Leu's monsoon runs December–March, when most of the year's rain falls.

Cyclone
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Piton Saint-Leu?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.1
Sightseeing
5th-best month of the year
4.9
Beach & pool
10th-best month of the year

September is one of the better times to visit Piton Saint-Leu for general sightseeing.

What to pack for Piton Saint-Leu in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Piton Saint-Leu sees daytime highs around 22°C and nights near 19°C. Pack sun protection. Worth having: rain gear. About 9 days see rain.

sun protectionrain gear

Sea temperature near Piton Saint-Leu in September

The nearest coast averages about 23°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in February at about 28°C and coldest in August near 23°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar28Warm
Apr27Warm
May26Warm
Jun25Warm
Jul24Refreshing
Aug23Refreshing
Sep23Refreshing
Oct24Warm
Nov25Warm
Dec27Warm

UV index in Piton Saint-Leu in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Piton Saint-Leu peaks around January 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 17UV 16Jul 10UV 6
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May8Very high
Jun6High
Jul6High
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Piton Saint-Leu?

Piton Saint-Leu sits at 21.2°S, 55.3°E, 350 m above sea level, in Reunion. The nearest listed city is Saint-Leu, 6.0 km away.

Saint-LeuSaint-LouisSaint-PierreLe TamponSaint-PaulLe PortLa PossessionSaint-Joseph

Topography around Piton Saint-Leu

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Piton Saint-Leu.

Within 3 km, the terrain around Piton Saint-Leu has large variations in elevation — a maximum elevation change of 897 m around an average of 293 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,875 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,030 m.

The land around Piton Saint-Leu is covered by trees (47%) within 3 km, water (51%) and trees (31%) within 16 km, and water (79%) within 80 km.

3 km
897 m
16 km
2,875 m
80 km
3,030 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Saint-Leu 6.0 km · Saint-Louis 12 km · Saint-Pierre 22 km · Le Tampon 22 km · Saint-Paul 24 km · Le Port 31 km · La Possession 32 km · Saint-Joseph 36 km

Reunion travel facts

Power plugs
Type C / E
220 V · 50 Hz

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Piton Saint-Leu (-21.2196°, 55.3151°, elevation 350 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).