Saint-Louis weather in July

In July, Saint-Louis sees average daytime highs of 20°C and overnight lows near 15°C, with 49 mm of rain across 14.3 wet days and about 10.8 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 28% of the time in July, and the air most often feels comfortable.

Daylight stretches from about 10 h 42 min at the start of July to 11 hours by month's end. Set against the rest of the year, July is Saint-Louis's 4th-clearest and 1st-windiest month. For the whole year in context, see Saint-Louis's year-round climate.

Daytime high: 20°; 12th warmest
Overnight low: 15°; 2nd coldest
Rainfall: 49 mm; 14.3 wet days
Daylight: 10 h 48 min; 6:59 AM – 5:49 PM
Cloud cover: 52%; 4th clearest
Wind: 9 km/h; 1st windiest
Solar energy: 4.09 kWh/m²
Travel score: 5.7; out of 10

← June Saint-Louis year-round climate August →Best places to visit in July

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical July day in Saint-Louis reaches about 20°C in the afternoon and slips back to 15°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 21°C. Set against its neighbours, July runs about 1°C cooler than June and on par with August.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	20	20	20	20	20	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	20	20	20	20	20	20	20	20	20	20	20
Avg low (°C)	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15

	Avg high (°C)	Avg low (°C)
1	20	15
2	20	15
3	20	15
4	20	15
5	20	15
6	19	15
7	19	15
8	19	15
9	19	15
10	19	15
11	19	15
12	19	15
13	19	15
14	19	15
15	19	15
16	19	15
17	19	15
18	19	15
19	19	15
20	19	15
21	20	15
22	20	15
23	20	15
24	20	15
25	20	15
26	20	15
27	20	15
28	20	15
29	20	15
30	20	15
31	20	15

Saint-Louis weather by month

How July compares with the rest of the year at a glance. July is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	25° / 21°	280	23.9	13.2	4.5
Feb	25° / 21°	264	22.7	12.7	4.4
Mar	25° / 20°	212	21.3	12.2	5.0
Apr	24° / 19°	93	18.2	11.5	5.6
May	22° / 18°	86	17.1	11	5.8
Jun	20° / 16°	50	13.7	10.7	5.9
Jul	20° / 15°	49	14.3	10.8	5.7
Aug	20° / 15°	45	12.6	11.3	6.1
Sep	21° / 15°	45	12	11.9	6.2
Oct	22° / 16°	56	13.4	12.5	6.2
Nov	24° / 18°	96	16.4	13	5.8
Dec	25° / 20°	174	21.6	13.3	5.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 36% of July, with mostly cloudy or overcast conditions the remaining 36%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	64	64	63	63	63	63	62	63	63	63	63	63	63	64	64	64	64	65	64	64	65	65	65	65	65	65	65	65	65	66	66
Cloudier (%)	36	36	37	37	37	37	38	37	37	37	37	37	37	36	36	36	36	35	36	36	35	35	35	35	35	35	35	35	35	34	34

	Clearer (%)	Cloudier (%)
1	64	36
2	64	36
3	63	37
4	63	37
5	63	37
6	63	37
7	62	38
8	63	37
9	63	37
10	63	37
11	63	37
12	63	37
13	63	37
14	64	36
15	64	36
16	64	36
17	64	36
18	65	35
19	64	36
20	64	36
21	65	35
22	65	35
23	65	35
24	65	35
25	65	35
26	65	35
27	65	35
28	65	35
29	65	35
30	66	34
31	66	34

Chance of precipitation in July

Any precipitation

Saint-Louis gets around 49 mm of rain over 14.3 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 46% and peaks near 48% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	48	48	48	48	47	47	47	47	47	47	47	47	47	47	46	46	46	46	47	47	47	46	46	46	46	45	45	45	44	44	44

	Rain chance (%)
1	48
2	48
3	48
4	48
5	47
6	47
7	47
8	47
9	47
10	47
11	47
12	47
13	47
14	47
15	46
16	46
17	46
18	46
19	47
20	47
21	47
22	46
23	46
24	46
25	46
26	45
27	45
28	45
29	44
30	44
31	44

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the comfortable band about 53% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	31	32	33	35	36	37	38	38	39	39	39	40	40	40	40	40	40	39	39	39	39	39	39	40	40	41	42	43	44	44	45
Comfortable (%)	60	60	60	58	58	57	56	56	55	55	55	53	53	52	52	52	51	52	52	52	51	51	51	50	50	49	48	47	47	46	46
Humid (%)	9	8	7	7	6	6	6	6	6	6	6	7	7	8	8	8	9	9	9	9	10	10	10	10	10	10	10	10	9	9	9

	Dry (%)	Comfortable (%)	Humid (%)
1	31	60	9
2	32	60	8
3	33	60	7
4	35	58	7
5	36	58	6
6	37	57	6
7	38	56	6
8	38	56	6
9	39	55	6
10	39	55	6
11	39	55	6
12	40	53	7
13	40	53	7
14	40	52	8
15	40	52	8
16	40	52	8
17	40	51	9
18	39	52	9
19	39	52	9
20	39	52	9
21	39	51	10
22	39	51	10
23	39	51	10
24	40	50	10
25	40	50	10
26	41	49	10
27	42	48	10
28	43	47	10
29	44	47	9
30	44	46	9
31	45	46	9

Wind in July

Winds average 9 km/h in July, the windiest month of the year.

Across July, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	9	9	9	9	9	9	9	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	9	calm
2	9	calm
3	9	calm
4	9	calm
5	9	calm
6	9	calm
7	9	calm
8	9	calm
9	9	calm
10	10	calm
11	10	calm
12	10	calm
13	10	calm
14	10	calm
15	10	calm
16	10	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	calm
22	10	calm
23	9	calm
24	9	calm
25	9	calm
26	9	calm
27	9	calm
28	9	calm
29	9	calm
30	9	calm
31	9	calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 10 h 42 min at the start of July to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over July. Sunrise moves from 7:00 AM to 6:54 AM, and sunset from 5:43 PM to 5:55 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.7	10.7	10.7	10.7	10.7	10.7	10.7	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	11.0	11.0	11.0	11.0
Sunrise (AM)	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	6:59	6:59	6:59	6:59	6:58	6:58	6:58	6:58	6:57	6:57	6:57	6:56	6:56	6:55	6:55	6:54
Sunset (PM)	5:43	5:44	5:44	5:44	5:45	5:45	5:45	5:46	5:46	5:46	5:47	5:47	5:47	5:48	5:48	5:49	5:49	5:49	5:50	5:50	5:51	5:51	5:51	5:52	5:52	5:53	5:53	5:53	5:54	5:54	5:55

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.7	7:00	5:43
2	10.7	7:00	5:44
3	10.7	7:00	5:44
4	10.7	7:00	5:44
5	10.7	7:00	5:45
6	10.7	7:00	5:45
7	10.7	7:00	5:45
8	10.8	7:00	5:46
9	10.8	7:00	5:46
10	10.8	7:00	5:46
11	10.8	7:00	5:47
12	10.8	7:00	5:47
13	10.8	7:00	5:47
14	10.8	7:00	5:48
15	10.8	7:00	5:48
16	10.8	6:59	5:49
17	10.8	6:59	5:49
18	10.8	6:59	5:49
19	10.9	6:59	5:50
20	10.9	6:58	5:50
21	10.9	6:58	5:51
22	10.9	6:58	5:51
23	10.9	6:58	5:51
24	10.9	6:57	5:52
25	10.9	6:57	5:52
26	10.9	6:57	5:53
27	10.9	6:56	5:53
28	11.0	6:56	5:53
29	11.0	6:55	5:54
30	11.0	6:55	5:54
31	11.0	6:54	5:55

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.09 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 — July's 4.09 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	3.9	3.9	3.9	3.9	3.9	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.1	4.1	4.1	4.1	4.1	4.1	4.2	4.2	4.2	4.2	4.2	4.3	4.3	4.3	4.3	4.4	4.4	4.4
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.9	Moderate
2	3.9	Moderate
3	3.9	Moderate
4	3.9	Moderate
5	3.9	Moderate
6	4.0	Moderate
7	4.0	Moderate
8	4.0	Moderate
9	4.0	Moderate
10	4.0	Bright
11	4.0	Bright
12	4.0	Bright
13	4.0	Bright
14	4.1	Bright
15	4.1	Bright
16	4.1	Bright
17	4.1	Bright
18	4.1	Bright
19	4.1	Bright
20	4.2	Bright
21	4.2	Bright
22	4.2	Bright
23	4.2	Bright
24	4.2	Bright
25	4.3	Bright
26	4.3	Bright
27	4.3	Bright
28	4.3	Bright
29	4.4	Bright
30	4.4	Bright
31	4.4	Bright

Planning a trip in July

Hazard calendar for Saint-Louis

In seasonPeak

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

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 July a good time to visit Saint-Louis?

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

5.7

Sightseeing

7th-best month of the year

2.7

Beach & pool

12th-best month of the year

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

What to pack for Saint-Louis in July

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

In July, Saint-Louis sees daytime highs around 20°C and nights near 15°C. Pack rain gear. About 14 days see rain.

rain gear

Sea temperature near Saint-Louis in July

The nearest coast averages about 24°C in July — 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	28	28	28	27	26	25	24	23	23	24	25	27
Comfort	Warm	Tropical	Warm	Warm	Warm	Warm	Refreshing	Refreshing	Refreshing	Warm	Warm	Warm

	Sea temperature (°C)	Comfort
Jan	28	Warm
Feb	28	Tropical
Mar	28	Warm
Apr	27	Warm
May	26	Warm
Jun	25	Warm
Jul	24	Refreshing
Aug	23	Refreshing
Sep	23	Refreshing
Oct	24	Warm
Nov	25	Warm
Dec	27	Warm

UV index in Saint-Louis in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 6 — enough to warrant sun protection. 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	17	15	13	10	8	6	6	9	10	12	13	14
Level	Extreme	Extreme	Extreme	Extreme	Very high	High	High	Very high	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	17	Extreme
Feb	15	Extreme
Mar	13	Extreme
Apr	10	Extreme
May	8	Very high
Jun	6	High
Jul	6	High
Aug	9	Very high
Sep	10	Extreme
Oct	12	Extreme
Nov	13	Extreme
Dec	14	Extreme

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.

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

trees 40%

16 km

2,578 m

water 43%

80 km

3,030 m

water 79%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← June Saint-Louis year-round climate August →Best places to visit in July

July 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).

	Avg high (°C)	Avg low (°C)
1	20	15
2	20	15
3	20	15
4	20	15
5	20	15
6	19	15
7	19	15
8	19	15
9	19	15
10	19	15
11	19	15
12	19	15
13	19	15
14	19	15
15	19	15
16	19	15
17	19	15
18	19	15
19	19	15
20	19	15
21	20	15
22	20	15
23	20	15
24	20	15
25	20	15
26	20	15
27	20	15
28	20	15
29	20	15
30	20	15
31	20	15

	Clearer (%)	Cloudier (%)
1	64	36
2	64	36
3	63	37
4	63	37
5	63	37
6	63	37
7	62	38
8	63	37
9	63	37
10	63	37
11	63	37
12	63	37
13	63	37
14	64	36
15	64	36
16	64	36
17	64	36
18	65	35
19	64	36
20	64	36
21	65	35
22	65	35
23	65	35
24	65	35
25	65	35
26	65	35
27	65	35
28	65	35
29	65	35
30	66	34
31	66	34

	Rain chance (%)
1	48
2	48
3	48
4	48
5	47
6	47
7	47
8	47
9	47
10	47
11	47
12	47
13	47
14	47
15	46
16	46
17	46
18	46
19	47
20	47
21	47
22	46
23	46
24	46
25	46
26	45
27	45
28	45
29	44
30	44
31	44

	Dry (%)	Comfortable (%)	Humid (%)
1	31	60	9
2	32	60	8
3	33	60	7
4	35	58	7
5	36	58	6
6	37	57	6
7	38	56	6
8	38	56	6
9	39	55	6
10	39	55	6
11	39	55	6
12	40	53	7
13	40	53	7
14	40	52	8
15	40	52	8
16	40	52	8
17	40	51	9
18	39	52	9
19	39	52	9
20	39	52	9
21	39	51	10
22	39	51	10
23	39	51	10
24	40	50	10
25	40	50	10
26	41	49	10
27	42	48	10
28	43	47	10
29	44	47	9
30	44	46	9
31	45	46	9

	Avg high (°C)	Avg low (°C)
1	20	15
2	20	15
3	20	15
4	20	15
5	20	15
6	19	15
7	19	15
8	19	15
9	19	15
10	19	15
11	19	15
12	19	15
13	19	15
14	19	15
15	19	15
16	19	15
17	19	15
18	19	15
19	19	15
20	19	15
21	20	15
22	20	15
23	20	15
24	20	15
25	20	15
26	20	15
27	20	15
28	20	15
29	20	15
30	20	15
31	20	15

	Clearer (%)	Cloudier (%)
1	64	36
2	64	36
3	63	37
4	63	37
5	63	37
6	63	37
7	62	38
8	63	37
9	63	37
10	63	37
11	63	37
12	63	37
13	63	37
14	64	36
15	64	36
16	64	36
17	64	36
18	65	35
19	64	36
20	64	36
21	65	35
22	65	35
23	65	35
24	65	35
25	65	35
26	65	35
27	65	35
28	65	35
29	65	35
30	66	34
31	66	34

	Rain chance (%)
1	48
2	48
3	48
4	48
5	47
6	47
7	47
8	47
9	47
10	47
11	47
12	47
13	47
14	47
15	46
16	46
17	46
18	46
19	47
20	47
21	47
22	46
23	46
24	46
25	46
26	45
27	45
28	45
29	44
30	44
31	44

	Dry (%)	Comfortable (%)	Humid (%)
1	31	60	9
2	32	60	8
3	33	60	7
4	35	58	7
5	36	58	6
6	37	57	6
7	38	56	6
8	38	56	6
9	39	55	6
10	39	55	6
11	39	55	6
12	40	53	7
13	40	53	7
14	40	52	8
15	40	52	8
16	40	52	8
17	40	51	9
18	39	52	9
19	39	52	9
20	39	52	9
21	39	51	10
22	39	51	10
23	39	51	10
24	40	50	10
25	40	50	10
26	41	49	10
27	42	48	10
28	43	47	10
29	44	47	9
30	44	46	9
31	45	46	9

	Avg high (°C)	Avg low (°C)
1	20	15
2	20	15
3	20	15
4	20	15
5	20	15
6	19	15
7	19	15
8	19	15
9	19	15
10	19	15
11	19	15
12	19	15
13	19	15
14	19	15
15	19	15
16	19	15
17	19	15
18	19	15
19	19	15
20	19	15
21	20	15
22	20	15
23	20	15
24	20	15
25	20	15
26	20	15
27	20	15
28	20	15
29	20	15
30	20	15
31	20	15

	Clearer (%)	Cloudier (%)
1	64	36
2	64	36
3	63	37
4	63	37
5	63	37
6	63	37
7	62	38
8	63	37
9	63	37
10	63	37
11	63	37
12	63	37
13	63	37
14	64	36
15	64	36
16	64	36
17	64	36
18	65	35
19	64	36
20	64	36
21	65	35
22	65	35
23	65	35
24	65	35
25	65	35
26	65	35
27	65	35
28	65	35
29	65	35
30	66	34
31	66	34

	Rain chance (%)
1	48
2	48
3	48
4	48
5	47
6	47
7	47
8	47
9	47
10	47
11	47
12	47
13	47
14	47
15	46
16	46
17	46
18	46
19	47
20	47
21	47
22	46
23	46
24	46
25	46
26	45
27	45
28	45
29	44
30	44
31	44

	Dry (%)	Comfortable (%)	Humid (%)
1	31	60	9
2	32	60	8
3	33	60	7
4	35	58	7
5	36	58	6
6	37	57	6
7	38	56	6
8	38	56	6
9	39	55	6
10	39	55	6
11	39	55	6
12	40	53	7
13	40	53	7
14	40	52	8
15	40	52	8
16	40	52	8
17	40	51	9
18	39	52	9
19	39	52	9
20	39	52	9
21	39	51	10
22	39	51	10
23	39	51	10
24	40	50	10
25	40	50	10
26	41	49	10
27	42	48	10
28	43	47	10
29	44	47	9
30	44	46	9
31	45	46	9