Saint-Laurent-du-Maroni weather in July

In July, Saint-Laurent-du-Maroni sees average daytime highs of 30°C and overnight lows near 23°C, with 254 mm of rain across 26.5 wet days and about 12.3 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 15% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of July to 12 h 12 min by month's end. Set against the rest of the year, July is Saint-Laurent-du-Maroni's 4th-clearest and 12th-windiest month. For the whole year in context, see Saint-Laurent-du-Maroni's year-round climate.

Daytime high
30°
5th warmest
Overnight low
23°
2nd coldest
Rainfall
254 mm
26.5 wet days
Daylight
12 h 18 min
6:33 AM – 6:50 PM
Cloud cover
65%
4th clearest
Wind
6 km/h
12th windiest
Solar energy
4.99 kWh/m²
Travel score
3.1
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 July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical July day in Saint-Laurent-du-Maroni reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 31°C. Set against its neighbours, July runs on par with June and on par with August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273123
283123
293123
303123
313123

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

Once humidity and wind are folded in, July averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Saint-Laurent-du-Maroni weather by month

How July compares with the rest of the year at a glance. July is the 5th-warmest and 3rd-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 26% of July, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22872
32872
43070
53070
63169
73367
83466
93565
103763
113961
123961
134159
144159
154357
164357
174456
184555
194654
204753
214852
224951
234951
245050
255050
265050
275149
285149
295149
305347
315347

Chance of precipitation in July

Any precipitation

Saint-Laurent-du-Maroni gets around 254 mm of rain over 26.5 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 85% and peaks near 91% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
291
391
490
590
690
790
889
989
1089
1189
1289
1389
1488
1588
1687
1787
1886
1985
2084
2183
2282
2382
2481
2580
2678
2777
2876
2975
3074
3173

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 77% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
17525
27624
37624
47723
57723
67723
77822
87822
97822
107822
117723
127723
137723
147723
157624
167624
177624
187624
197624
207624
217624
227624
237624
247624
257624
267624
277723
287723
297723
307723
317723

Wind in July

Winds average 6 km/h in July, the calmest month.

Across July, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in July

DaylightNight

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

Days shrink by about 6 minutes over July. Sunrise moves from 6:30 AM to 6:35 AM, and sunset from 6:49 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:306:49
212.36:306:49
312.36:306:49
412.36:316:49
512.36:316:50
612.36:316:50
712.36:316:50
812.36:316:50
912.36:326:50
1012.36:326:50
1112.36:326:50
1212.36:326:50
1312.36:326:50
1412.36:336:50
1512.36:336:50
1612.36:336:50
1712.36:336:50
1812.36:336:50
1912.36:346:50
2012.36:346:50
2112.36:346:50
2212.36:346:50
2312.36:346:50
2412.36:346:50
2512.36:346:50
2612.36:346:50
2712.36:356:50
2812.36:356:50
2912.36:356:50
3012.26:356:50
3112.26:356:50

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.99 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 — July's 4.99 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.9Bright
124.9Bright
134.9Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in July

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

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

3.1
Sightseeing
10th-best month of the year
4.3
Beach & pool
10th-best month of the year

July is a weaker month for outdoor sightseeing in Saint-Laurent-du-Maroni.

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

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

In July, Saint-Laurent-du-Maroni sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

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

The nearest coast averages about 28°C in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (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 July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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
July 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).