Saint-Laurent-du-Maroni weather in January

In January, Saint-Laurent-du-Maroni sees average daytime highs of 29°C and overnight lows near 23°C, with 164 mm of rain across 21.4 wet days and about 11.7 hours of daylight. It is the 11th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 8% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 42 min at the start of January to 11 h 48 min by month's end. Set against the rest of the year, January is Saint-Laurent-du-Maroni's 9th-clearest and 3rd-windiest month. For the whole year in context, see Saint-Laurent-du-Maroni's year-round climate.

Daytime high
29°
11th warmest
Overnight low
23°
2nd coldest
Rainfall
164 mm
21.4 wet days
Daylight
11 h 42 min
6:54 AM – 6:37 PM
Cloud cover
72%
9th clearest
Wind
10 km/h
3rd windiest
Solar energy
4.43 kWh/m²
Travel score
4.1
out of 10

Saint-Laurent-du-Maroni is commune in Guyane, France.

Density
5/km²
people per km²

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 29°C through the month.

A typical January day in Saint-Laurent-du-Maroni reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, January runs on par with December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923
312923

How January really feels in Saint-Laurent-du-Maroni

Once humidity and wind are folded in, January averages 19 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
19
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Saint-Laurent-du-Maroni weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°16421.411.74.1
Feb29° / 23°1231711.84.4
Mar29° / 23°10617.4124.4
Apr29° / 24°18621.312.13.7
May30° / 24°32027.412.23.1
Jun30° / 23°33228.112.32.9
Jul30° / 23°25426.512.33.1
Aug31° / 23°14819.512.23.6
Sep31° / 23°8814.6123.9
Oct31° / 23°10016.111.93.8
Nov31° / 23°17221.911.73.3
Dec29° / 23°20325.111.73.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 21% of January, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42971
52971
62971
73070
83070
93070
102971
112971
122971
132971
143070
153070
162971
172971
182971
192872
202872
212872
222872
232872
242773
252872
262872
272872
282872
292971
302872
312971

Chance of precipitation in January

Any precipitation

Saint-Laurent-du-Maroni gets around 164 mm of rain over 21.4 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 69% and peaks near 77% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
177
276
376
475
575
674
774
873
973
1072
1171
1271
1370
1469
1568
1668
1767
1867
1967
2066
2166
2266
2365
2465
2565
2665
2764
2864
2964
3063
3163

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
11927
21927
31927
41936
51936
61936
71936
81936
91936
102926
112926
122926
132926
143916
153916
163925
173925
183925
193925
204915
214915
224915
234915
244915
254915
264915
274915
284915
294915
304915
314915

Wind in January

Winds average 10 km/h in January.

Across January, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 42 min at the start of January to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 6:49 AM to 6:57 AM, and sunset from 6:30 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:496:30
211.76:496:30
311.76:506:31
411.76:506:31
511.76:506:32
611.76:516:32
711.76:516:33
811.76:516:33
911.76:526:34
1011.76:526:34
1111.76:526:35
1211.76:536:35
1311.76:536:35
1411.76:536:36
1511.76:546:36
1611.76:546:37
1711.76:546:37
1811.76:556:38
1911.76:556:38
2011.76:556:38
2111.76:556:39
2211.76:556:39
2311.76:566:40
2411.76:566:40
2511.76:566:40
2611.76:566:41
2711.76:566:41
2811.76:566:41
2911.86:566:42
3011.86:576:42
3111.86:576:42

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.43 kWh/m².

For context, solar energy here swings from a low near 4.36 kWh/m² to a high of 6.17 kWh/m² in September across the year — January's 4.43 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in January

Is January a good time to visit Saint-Laurent-du-Maroni?

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

4.1
Sightseeing
3rd-best month of the year
5.1
Beach & pool
6th-best month of the year

January is a reasonable time to visit Saint-Laurent-du-Maroni for sightseeing.

What to pack for Saint-Laurent-du-Maroni in January

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

In January, Saint-Laurent-du-Maroni sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 21 days see rain.

light clothesrain gear

Sea temperature near Saint-Laurent-du-Maroni in January

The nearest coast averages about 26°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 43 km away) is warmest in August at about 28°C and coldest in January near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb27Warm
Mar27Warm
Apr27Warm
May27Warm
Jun28Warm
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct28Tropical
Nov28Warm
Dec27Warm

UV index in Saint-Laurent-du-Maroni in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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-Laurent-du-Maroni peaks around March 24 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 24UV 14Dec 11UV 10
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Saint-Laurent-du-Maroni 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-Laurent-du-Maroni is worst in February — around 24 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (August, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2024 µg/m³Aug 137 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb24Moderate
Mar24Moderate
Apr24Moderate
May19Moderate
Jun12Good
Jul8Good
Aug7Good
Sep10Good
Oct14Moderate
Nov12Good
Dec18Moderate
Location & terrain

Where is Saint-Laurent-du-Maroni?

Saint-Laurent-du-Maroni sits at 5.5°N, 54.0°W, 10 m above sea level, in French Guiana. The nearest listed city is Blauwgrond, 126 km away.

Topography around Saint-Laurent-du-Maroni

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

Within 3 km, the terrain around Saint-Laurent-du-Maroni has only modest variations in elevation — a maximum elevation change of 48 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 87 m; within 80 km, significant variations in elevation — a maximum elevation change of 574 m.

The land around Saint-Laurent-du-Maroni is covered by water (41%) and trees (34%) within 3 km, trees (86%) within 16 km, and trees (73%) and water (23%) within 80 km.

3 km
48 m
16 km
87 m
80 km
574 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
January weather nearby: Blauwgrond 126 km · Rainville 128 km · Beekhuizen 131 km · Paramaribo 132 km · Munder Buiten 133 km · Flora 134 km · Pontbuiten 134 km · Latour 135 km

French Guiana travel facts

Travel advisory
Level 1
Exercise Normal Precautions
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-Laurent-du-Maroni (5.5015°, -54.0292°, elevation 10 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. 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).