Sainte-Marie weather in December

In December, Sainte-Marie sees average daytime highs of 25°C and overnight lows near 21°C, with 138 mm of rain across 18.9 wet days and about 13.2 hours of daylight. It is the 4th-warmest and 4th-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 17% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 12 min at the start of December to 13 h 18 min by month's end. Set against the rest of the year, December is Sainte-Marie's 9th-clearest and 9th-windiest month. For the whole year in context, see Sainte-Marie's year-round climate.

Daytime high
25°
4th warmest
Overnight low
21°
9th coldest
Rainfall
138 mm
18.9 wet days
Daylight
13 h 18 min
5:36 AM – 6:52 PM
Cloud cover
64%
9th clearest
Wind
8 km/h
9th windiest
Solar energy
7.17 kWh/m²
Travel score
5.4
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

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

A typical December day in Sainte-Marie reaches about 25°C in the afternoon and slips back to 21°C overnight — a 4°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, December runs about 1°C warmer than November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12420
22520
32520
42520
52520
62520
72521
82521
92521
102521
112521
122521
132521
142521
152521
162521
172521
182521
192521
202521
212521
222521
232521
242521
252521
262521
272521
282521
292522
302522
312522

Sainte-Marie weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 22°25121.713.14.9
Feb26° / 22°24421.912.74.5
Mar26° / 22°2192212.15.0
Apr25° / 21°7816.711.55.8
May23° / 19°7416116.2
Jun21° / 17°401110.86.6
Jul21° / 16°3611.910.96.5
Aug21° / 16°341011.36.8
Sep21° / 17°3610.111.96.8
Oct23° / 18°471112.56.7
Nov24° / 19°8415.4136.1
Dec25° / 21°13818.913.25.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24555
34555
44555
54555
64555
74555
84555
94555
104456
114456
124357
134258
144258
154159
164159
174060
184060
193961
203961
213862
223862
233763
243664
253466
263466
273268
283268
293169
303169
313169

Chance of precipitation in December

Any precipitation

Sainte-Marie gets around 138 mm of rain over 18.9 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 62% and peaks near 67% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
158
258
358
459
559
659
759
859
959
1060
1160
1260
1361
1461
1561
1662
1762
1862
1962
2062
2162
2262
2363
2463
2564
2665
2765
2866
2966
3067
3167

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1543520
2542530
3441541
4440551
5439561
6438571
7437581
8336592
9335602
10334612
11333613
12332623
13332614
14331624
15330625
16230635
17229645
18228646
19228646
20227647
21227647
22126658
23125659
241256410
251246411
261236412
271226413
280216415
290206416
300196318
310186319

Wind in December

Winds average 8 km/h in December.

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

051015151015202531
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
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 12 min at the start of December to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:32 AM to 5:43 AM, and sunset from 6:43 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:326:43
213.25:326:44
313.25:326:44
413.25:336:45
513.25:336:45
613.25:336:46
713.25:336:47
813.25:346:47
913.25:346:48
1013.25:346:48
1113.25:346:49
1213.25:356:50
1313.35:356:50
1413.35:356:51
1513.35:366:51
1613.35:366:52
1713.35:366:52
1813.35:376:53
1913.35:376:53
2013.35:386:54
2113.35:386:54
2213.35:396:55
2313.35:396:55
2413.35:406:56
2513.35:406:56
2613.35:416:57
2713.35:416:57
2813.35:426:57
2913.35:426:58
3013.35:436:58
3113.35:436:59

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.17 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.95 kWh/m² to a high of 7.17 kWh/m² in December across the year — December's 7.17 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.2Intense
57.2Intense
67.2Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.2Intense
157.2Intense
167.2Intense
177.2Intense
187.2Intense
197.1Intense
207.1Intense
217.1Intense
227.1Intense
237.1Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
286.9Intense
296.9Intense
306.9Intense
316.8Intense
Planning a trip in December

Hazard calendar for Sainte-Marie

In seasonPeak

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

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

Sainte-Marie'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 December a good time to visit Sainte-Marie?

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

5.4
Sightseeing
9th-best month of the year
4.9
Beach & pool
4th-best month of the year

December is a reasonable time to visit Sainte-Marie for sightseeing.

What to pack for Sainte-Marie in December

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

In December, Sainte-Marie sees daytime highs around 25°C and nights near 21°C. Pack rain gear and sun protection. Worth having: light clothes. About 19 days see rain.

rain gearsun protectionlight clothes

Sea temperature near Sainte-Marie in December

The nearest coast averages about 27°C in December — 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
Mar28Tropical
Apr27Warm
May27Warm
Jun25Warm
Jul24Refreshing
Aug23Refreshing
Sep24Refreshing
Oct24Warm
Nov25Warm
Dec27Warm

UV index in Sainte-Marie in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sainte-Marie peaks around January 18 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 18UV 16Jun 23UV 6
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May8Very high
Jun6High
Jul6High
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Sainte-Marie?

Sainte-Marie sits at 20.9°S, 55.6°E, 9 m above sea level, in Reunion. The nearest listed city is Sainte-Suzanne, 6.0 km away.

Sainte-SuzanneSaint-DenisSaint-AndréLa PossessionSaint-BenoîtLe PortSaint-PaulSaint-Leu

Topography around Sainte-Marie

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

Within 3 km, the terrain around Sainte-Marie has only modest variations in elevation — a maximum elevation change of 223 m around an average of 55 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,258 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,030 m.

The land around Sainte-Marie is covered by water (41%), trees (23%) and cropland (21%) within 3 km, water (51%) and trees (37%) within 16 km, and water (79%) within 80 km.

3 km
223 m
16 km
2,258 m
80 km
3,030 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Sainte-Suzanne 6.0 km · Saint-Denis 11 km · Saint-André 13 km · La Possession 23 km · Saint-Benoît 23 km · Le Port 27 km · Saint-Paul 32 km · Saint-Leu 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 Sainte-Marie (-20.8969°, 55.5506°, elevation 9 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).