Saint-Louis weather in March

In March, Saint-Louis sees average daytime highs of 25°C and overnight lows near 20°C, with 212 mm of rain across 21.3 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 13% of the time in March, and the air most often feels muggy.

Daylight stretches from about 12 h 30 min at the start of March to 11 h 48 min by month's end. Set against the rest of the year, March is Saint-Louis's 9th-clearest and 5th-windiest month. For the whole year in context, see Saint-Louis's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
212 mm
21.3 wet days
Daylight
12 h 12 min
6:23 AM – 6:33 PM
Cloud cover
67%
9th clearest
Wind
8 km/h
5th windiest
Solar energy
5.88 kWh/m²
Travel score
5.0
out of 10

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical March day in Saint-Louis reaches about 25°C in the afternoon and slips back to 20°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 26°C. Set against its neighbours, March runs on par with February and about 1°C warmer than April.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12521
22521
32521
42521
52521
62521
72521
82521
92521
102521
112521
122521
132521
142521
152521
162520
172520
182520
192520
202520
212520
222520
232520
242520
252520
262520
272520
282520
292520
302520
312520

Saint-Louis weather by month

How March compares with the rest of the year at a glance. March is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 21°28023.913.24.5
Feb25° / 21°26422.712.74.4
Mar25° / 20°21221.312.25.0
Apr24° / 19°9318.211.55.6
May22° / 18°8617.1115.8
Jun20° / 16°5013.710.75.9
Jul20° / 15°4914.310.85.7
Aug20° / 15°4512.611.36.1
Sep21° / 15°451211.96.2
Oct22° / 16°5613.412.56.2
Nov24° / 18°9616.4135.8
Dec25° / 20°17421.613.35.0

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 28% of March, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23664
33763
43763
53664
63763
73763
83664
93763
103664
113664
123664
133664
143763
153763
163862
173862
183961
194159
204159
214258
224357
234357
244456
254555
264654
274753
284852
294951
305050
315050

Chance of precipitation in March

Any precipitation

Saint-Louis gets around 212 mm of rain over 21.3 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 69% and peaks near 78% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
178
277
377
476
576
675
774
873
972
1071
1171
1270
1369
1469
1568
1668
1767
1867
1966
2066
2166
2266
2366
2466
2565
2665
2765
2864
2963
3063
3162

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the muggy band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
10157411
20167311
30167311
40177211
50187111
60197011
70206911
80216910
90226810
100226810
11023689
12023698
13024688
14024697
15024697
16025696
17025705
18026695
19026704
20026704
21026704
22027703
23027703
24027703
25128683
26129682
27129682
28131662
29132652
30233641
31234631

Wind in March

Winds average 8 km/h in March.

Across March, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
237calm
247calm
257calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 12 h 30 min at the start of March to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over March. Sunrise moves from 6:18 AM to 6:28 AM, and sunset from 6:45 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:186:45
212.46:186:45
312.46:196:44
412.46:196:43
512.46:196:42
612.46:206:41
712.36:206:41
812.36:216:40
912.36:216:39
1012.36:216:38
1112.36:226:37
1212.26:226:36
1312.26:226:35
1412.26:236:34
1512.26:236:33
1612.26:236:33
1712.16:246:32
1812.16:246:31
1912.16:246:30
2012.16:256:29
2112.06:256:28
2212.06:256:27
2312.06:266:26
2412.06:266:25
2512.06:266:24
2611.96:276:23
2711.96:276:22
2811.96:276:21
2911.96:286:20
3011.96:286:19
3111.86:286:18

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 5.88 kWh/m².

For context, solar energy here swings from a low near 3.93 kWh/m² to a high of 7.11 kWh/m² in November across the year — March's 5.88 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.0Intense
46.0Intense
56.0Intense
66.0Intense
76.0Bright
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.6Bright
Planning a trip in March

Hazard calendar for Saint-Louis

In seasonPeak

In March, Saint-Louis sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

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

Saint-Louis'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 March a good time to visit Saint-Louis?

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

5.0
Sightseeing
9th-best month of the year
4.6
Beach & pool
3rd-best month of the year

March is a reasonable time to visit Saint-Louis for sightseeing.

What to pack for Saint-Louis in March

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

In March, Saint-Louis sees daytime highs around 25°C and nights near 20°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.

rain gearlight clothessun protection

Sea temperature near Saint-Louis in March

The nearest coast averages about 28°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore 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 Saint-Louis in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Saint-Louis 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
Jan17Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun6High
Jul6High
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Saint-Louis?

Saint-Louis sits at 21.3°S, 55.4°E, 40 m above sea level, in Reunion. The nearest listed city is Saint-Pierre, 9.0 km away.

Saint-PierreLe TamponPiton Saint-LeuSaint-LeuSaint-JosephSaint-PaulLa PossessionLe Port

Topography around Saint-Louis

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

Within 3 km, the terrain around Saint-Louis has only modest variations in elevation — a maximum elevation change of 244 m around an average of 55 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,578 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,030 m.

The land around Saint-Louis is covered by trees (40%) and artificial surfaces (20%) within 3 km, water (43%) and trees (36%) within 16 km, and water (79%) within 80 km.

3 km
244 m
16 km
2,578 m
80 km
3,030 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
March weather nearby: Saint-Pierre 9.0 km · Le Tampon 11 km · Piton Saint-Leu 12 km · Saint-Leu 18 km · Saint-Joseph 24 km · Saint-Paul 34 km · La Possession 40 km · Le Port 41 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 Saint-Louis (-21.2858°, 55.4112°, elevation 40 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).