Saint-Denis weather in April

In April, Saint-Denis sees average daytime highs of 25°C and overnight lows near 21°C, with 78 mm of rain across 16.7 wet days and about 11.5 hours of daylight. It is the 5th-warmest and 6th-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 29% of the time in April, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of April to 11 h 18 min by month's end. Set against the rest of the year, April is Saint-Denis's 7th-clearest and 10th-windiest month. For the whole year in context, see Saint-Denis's year-round climate.

Daytime high
25°
5th warmest
Overnight low
21°
8th coldest
Rainfall
78 mm
16.7 wet days
Daylight
11 h 30 min
6:33 AM – 6:04 PM
Cloud cover
55%
7th clearest
Wind
8 km/h
10th windiest
Solar energy
5.21 kWh/m²
Travel score
5.8
out of 10

Saint-Denis is French commune in Réunion.

Density
1,084/km²
people per km²
Founded
1669

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

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

A typical April day in Saint-Denis 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 23°C and 26°C. Set against its neighbours, April runs about 1°C cooler than March and about 2°C warmer than May.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12521
22521
32521
42521
52521
62521
72521
82521
92521
102521
112521
122521
132521
142521
152521
162521
172521
182521
192521
202521
212521
222521
232521
242421
252421
262420
272420
282420
292420
302420

Saint-Denis weather by month

How April compares with the rest of the year at a glance. April is the 5th-warmest and 6th-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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 32% of April, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15644
25644
35743
45842
55842
65941
75842
85842
95842
105842
115941
125941
135941
145941
155941
166040
176040
186040
196040
206139
216238
226337
236436
246436
256634
266634
276733
286733
296832
306832

Chance of precipitation in April

Any precipitation

Saint-Denis gets around 78 mm of rain over 16.7 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 57% and peaks near 64% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
164
264
363
463
562
661
760
860
959
1058
1158
1258
1358
1457
1557
1657
1756
1856
1956
2055
2154
2254
2353
2453
2552
2652
2752
2852
2952
3052

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the muggy band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
10127810
2013789
3014779
4015778
5016768
6017767
7017767
8018766
9019756
10019756
11120736
12120736
13120736
14120736
15120736
16121726
17121726
18222706
19222715
20223705
21224695
22325684
23326674
24328654
25429634
26431623
27532603
28534583
29636562
30637552

Wind in April

Winds average 8 km/h in April.

Across April, 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.

0246810151015202530
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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 48 min at the start of April to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over April. Sunrise moves from 6:28 AM to 6:38 AM, and sunset from 6:17 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:286:17
211.86:296:17
311.86:296:16
411.86:296:15
511.76:296:14
611.76:306:13
711.76:306:12
811.76:306:11
911.76:316:10
1011.66:316:09
1111.66:316:08
1211.66:326:07
1311.66:326:07
1411.66:326:06
1511.56:326:05
1611.56:336:04
1711.56:336:03
1811.56:336:02
1911.56:346:02
2011.46:346:01
2111.46:346:00
2211.46:355:59
2311.46:355:58
2411.46:355:58
2511.46:365:57
2611.36:365:56
2711.36:375:55
2811.36:375:55
2911.36:375:54
3011.36:385:53

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.21 kWh/m².

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 — April's 5.21 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.5Bright
65.5Bright
75.5Bright
85.4Bright
95.4Bright
105.4Bright
115.3Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.9Bright
274.8Bright
284.8Bright
294.8Bright
304.7Bright
Planning a trip in April

Hazard calendar for Saint-Denis

In seasonPeak

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

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

Saint-Denis'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 April a good time to visit Saint-Denis?

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

5.8
Sightseeing
8th-best month of the year
5.1
Beach & pool
1st-best month of the year

April is a reasonable time to visit Saint-Denis for sightseeing.

What to pack for Saint-Denis in April

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

In April, Saint-Denis sees daytime highs around 25°C and nights near 21°C. Pack rain gear. Worth having: light clothes and sun protection. About 17 days see rain.

rain gearlight clothessun protection

Sea temperature near Saint-Denis in April

The nearest coast averages about 28°C in April — 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 24°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
Apr28Warm
May27Warm
Jun25Warm
Jul24Warm
Aug24Refreshing
Sep24Refreshing
Oct24Warm
Nov25Warm
Dec27Warm

UV index in Saint-Denis in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 Saint-Denis 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 Saint-Denis?

Saint-Denis sits at 20.9°S, 55.5°E, 44 m above sea level, in Reunion. The nearest listed city is Sainte-Marie, 11 km away.

Sainte-MarieLa PossessionSainte-SuzanneLe PortSaint-AndréSaint-PaulSaint-BenoîtSaint-Leu

Topography around Saint-Denis

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

Within 3 km, the terrain around Saint-Denis has large variations in elevation — a maximum elevation change of 635 m around an average of 104 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 Saint-Denis is covered by water (40%), trees (33%) and artificial surfaces (24%) within 3 km, water (55%) and trees (34%) within 16 km, and water (78%) within 80 km.

3 km
635 m
16 km
2,258 m
80 km
3,030 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Sainte-Marie 11 km · La Possession 13 km · Sainte-Suzanne 17 km · Le Port 17 km · Saint-André 23 km · Saint-Paul 23 km · Saint-Benoît 33 km · Saint-Leu 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 Saint-Denis (-20.8823°, 55.4504°, elevation 44 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).