Saint-Louis weather in January

In January, Saint-Louis sees average daytime highs of 25°C and overnight lows near 19°C, with 3 mm of rain across 0.2 wet days and about 11.2 hours of daylight. It is the 9th-warmest and 5th-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 52% of the time in January, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of January to 11 h 18 min by month's end. Set against the rest of the year, January is Saint-Louis's 7th-clearest and 5th-windiest month. For the whole year in context, see Saint-Louis's year-round climate.

Daytime high
25°
9th warmest
Overnight low
19°
1st coldest
Rainfall
3 mm
0.2 wet days
Daylight
11 h 06 min
7:41 AM – 6:50 PM
Cloud cover
41%
7th clearest
Wind
21 km/h
5th windiest
Solar energy
5.28 kWh/m²
Travel score
8.7
out of 10

Saint-Louis is city and regional capital in Senegal.

Founded
1659

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Saint-Louis reaches about 25°C in the afternoon and slips back to 19°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 28°C. Set against its neighbours, January runs about 2°C cooler than December and on par with February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12620
22620
32620
42620
52619
62619
72619
82519
92519
102519
112519
122519
132519
142519
152519
162519
172519
182519
192519
202519
212519
222519
232519
242519
252519
262519
272519
282519
292519
302519
312519

How January really feels in Saint-Louis

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Saint-Louis weather by month

How January compares with the rest of the year at a glance. January is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 19°30.211.28.7
Feb25° / 19°10.211.58.8
Mar25° / 20°0011.99.1
Apr25° / 20°0012.39.2
May25° / 21°0012.79.1
Jun27° / 23°10.312.98.7
Jul28° / 25°11212.97.6
Aug29° / 26°577.812.55.9
Sep30° / 27°527.212.15.6
Oct30° / 26°132.111.66.1
Nov29° / 24°00.111.36.8
Dec27° / 21°20.311.18.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35941
45941
56040
66040
76040
86139
96238
106238
116436
126436
136535
146535
156535
166634
176634
186634
196634
206733
216733
226733
236733
246733
256832
266832
276832
286832
296733
306832
316832

Chance of precipitation in January

Any precipitation

Saint-Louis gets around 3 mm of rain over 0.2 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 1% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
10
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
180
190
200
210
220
230
240
250
260
270
280
290
300
310

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1771571
2771571
3781471
4801460
5801460
6811360
7811360
8811360
9811360
10811360
11821350
12821350
13821350
14821350
15811450
16811450
17811450
18811450
19801550
20801550
21801550
22791560
23791560
24771670
25771670
26761680
27761680
28751690
29751690
30751690
31761590

Wind in January

Winds average 21 km/h in January.

Across January, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 06 min at the start of January to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 7:37 AM to 7:41 AM, and sunset from 6:41 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.17:376:41
211.17:386:42
311.17:386:42
411.17:386:43
511.17:396:43
611.17:396:44
711.17:396:44
811.17:396:45
911.17:406:45
1011.17:406:46
1111.17:406:47
1211.17:406:47
1311.17:406:48
1411.17:416:48
1511.17:416:49
1611.17:416:50
1711.27:416:50
1811.27:416:51
1911.27:416:51
2011.27:416:52
2111.27:416:52
2211.27:416:53
2311.27:416:53
2411.27:416:54
2511.27:416:55
2611.27:416:55
2711.27:416:56
2811.37:416:56
2911.37:416:57
3011.37:416:57
3111.37:416:58

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.28 kWh/m².

For context, solar energy here swings from a low near 5 kWh/m² to a high of 7.37 kWh/m² in May across the year — January's 5.28 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.6Bright
315.6Bright
Planning a trip in January

Hazard calendar for Saint-Louis

In seasonPeak

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

Saint-Louis sits in the Atlantic hurricane belt; the season peaks August–October.

Saint-Louis sees dust haze year-round, heaviest in June.

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

Is January a good time to visit Saint-Louis?

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

8.7
Sightseeing
5th-best month of the year
7.9
Beach & pool
10th-best month of the year

January is one of the better times to visit Saint-Louis for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Saint-Louis in January

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

In January, Saint-Louis sees daytime highs around 25°C and nights near 19°C. Worth packing: light clothes, sun protection and a windbreaker.

light clothessun protectiona windbreaker

Sea temperature near Saint-Louis in January

The nearest coast averages about 20°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 km away) is warmest in September at about 28°C and coldest in February near 19°C.

It's comfortable for a long swim from May 3 to Jan 11 — about 8.4 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan20Cool
Feb19Cool
Mar19Cool
Apr19Cool
May21Refreshing
Jun24Refreshing
Jul26Warm
Aug28Warm
Sep28Tropical
Oct28Warm
Nov25Warm
Dec22Refreshing

UV index in Saint-Louis in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 8 (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 March 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highMar 18UV 12Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr11Extreme
May12Extreme
Jun10Extreme
Jul10Very high
Aug11Extreme
Sep11Extreme
Oct9Very high
Nov8Very high
Dec7High

Air quality in Saint-Louis in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Saint-Louis is worst in January — around 99 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (August, 30 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorPoorModeratePoorUnhealthyJan 2199 µg/m³Aug 2031 µg/m³
PM2.5 (µg/m³)Level
Jan99Unhealthy
Feb97Unhealthy
Mar70Unhealthy
Apr50Poor
May46Poor
Jun61Unhealthy
Jul42Poor
Aug30Moderate
Sep35Moderate
Oct51Poor
Nov54Poor
Dec90Unhealthy
Location & terrain

Where is Saint-Louis?

Saint-Louis sits at 16.0°N, 16.5°W, 8 m above sea level, in Senegal. The nearest listed city is Louga, 53 km away.

LougaKébémerRossoRichard-TollMékhéMboroDaganaTivaouane

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 9 m around an average of 1 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 26 m; within 80 km, only modest variations in elevation — a maximum elevation change of 57 m.

The land around Saint-Louis is covered by water (34%), artificial surfaces (27%) and wetland (22%) within 3 km, water (47%) and grassland (26%) within 16 km, and grassland (39%) and water (35%) within 80 km.

3 km
9 m
16 km
26 m
80 km
57 m
shrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
January weather nearby: Louga 53 km · Kébémer 73 km · Rosso 92 km · Richard-Toll 98 km · Mékhé 102 km · Mboro 106 km · Dagana 108 km · Tivaouane 124 km

Senegal travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / D / E / K
230 V · 50 Hz
Prices
≈ 36% of US
price level, 2025
GDP per capita
$1,955
2025
Happiness
4.8 / 10
World Happiness, 2025
Safe drinking water
27%
of population, 2024
Homicide rate
0.3
per 100k, 2015
Road deaths
23.5
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 442
Religion
Muslim 97%Christian 3%

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 (16.0179°, -16.4896°, elevation 8 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).