Rémire-Montjoly weather in August

In August, Rémire-Montjoly sees average daytime highs of 30°C and overnight lows near 25°C, with 67 mm of rain across 13.9 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 10th-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 57% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of August to 12 h 06 min by month's end. Set against the rest of the year, August is Rémire-Montjoly's 2nd-clearest and 10th-windiest month. For the whole year in context, see Rémire-Montjoly's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
25°
8th coldest
Rainfall
67 mm
13.9 wet days
Daylight
12 h 12 min
6:28 AM – 6:38 PM
Cloud cover
41%
2nd clearest
Wind
13 km/h
10th windiest
Solar energy
5.81 kWh/m²
Travel score
5.0
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

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

A typical August day in Rémire-Montjoly reaches about 30°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, August runs about 1°C warmer than July and on par with September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132925
142925
152925
163025
173025
183025
193025
203025
213025
223025
233025
243025
253025
263025
273025
283025
293025
303025
313025

How August really feels in Rémire-Montjoly

Once humidity and wind are folded in, August 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 August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Rémire-Montjoly weather by month

How August compares with the rest of the year at a glance. August is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°24426.611.74.0
Feb27° / 25°20522.311.84.2
Mar28° / 25°17323.9124.3
Apr28° / 25°2582512.14.0
May28° / 25°41129.112.23.5
Jun28° / 25°34428.512.33.5
Jul29° / 25°18624.812.34.0
Aug30° / 25°6713.912.25.0
Sep30° / 25°237.2125.5
Oct30° / 25°4010.111.95.1
Nov29° / 25°12219.611.84.2
Dec28° / 25°25326.511.73.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27327
37426
47525
57525
67525
77525
87525
97723
107723
117723
127723
137723
147822
157723
167822
177822
187822
198020
208020
218119
228119
238218
248317
258317
268317
278416
288515
298515
308515
318416

Chance of precipitation in August

Any precipitation

Rémire-Montjoly gets around 67 mm of rain over 13.9 wet days in August. 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 65% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
165
264
363
461
560
658
757
856
954
1053
1152
1251
1350
1449
1548
1646
1745
1844
1943
2041
2140
2238
2336
2435
2533
2632
2730
2829
2928
3027
3127

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1937
2937
3937
4937
5937
6937
7937
8937
9937
10946
11946
12946
13955
14955
15955
16955
17955
18955
19955
20955
21964
22964
23964
24964
25964
26964
27964
28973
29973
30973
31973

Wind in August

Winds average 13 km/h in August.

Across August, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 12 min at the start of August to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over August. Sunrise moves from 6:29 AM to 6:26 AM, and sunset from 6:42 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:296:42
212.26:296:41
312.26:296:41
412.26:296:41
512.26:296:41
612.26:296:41
712.26:296:40
812.26:296:40
912.26:296:40
1012.26:296:40
1112.26:296:40
1212.26:296:39
1312.26:296:39
1412.26:286:39
1512.26:286:38
1612.26:286:38
1712.26:286:38
1812.26:286:37
1912.26:286:37
2012.16:286:37
2112.16:286:36
2212.16:286:36
2312.16:276:35
2412.16:276:35
2512.16:276:35
2612.16:276:34
2712.16:276:34
2812.16:276:33
2912.16:276:33
3012.16:266:33
3112.16:266:32

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.81 kWh/m².

For context, solar energy here swings from a low near 4.48 kWh/m² to a high of 6.26 kWh/m² in September across the year — August's 5.81 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
236.0Bright
246.0Bright
256.0Intense
266.0Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.2Intense
Planning a trip in August

Hazard calendar for Rémire-Montjoly

In seasonPeak

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

Rémire-Montjoly's rainy season runs April–July, when most of the year's rain falls.

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

Is August a good time to visit Rémire-Montjoly?

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

5.0
Sightseeing
3rd-best month of the year
6.6
Beach & pool
3rd-best month of the year

August is a reasonable time to visit Rémire-Montjoly for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Rémire-Montjoly in August

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

In August, Rémire-Montjoly sees daytime highs around 30°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Rémire-Montjoly in August

The nearest coast averages about 28°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in July at about 28°C and coldest in January near 27°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr28Warm
May28Warm
Jun28Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct28Tropical
Nov28Warm
Dec27Warm

UV index in Rémire-Montjoly in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Rémire-Montjoly peaks around April 12 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeApr 12UV 14Dec 11UV 10
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Rémire-Montjoly in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Rémire-Montjoly is worst in February — around 28 µg/m³ PM2.5 (moderate), about 4.0× the cleanest month (August, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 1627 µg/m³Aug 157 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb28Moderate
Mar26Moderate
Apr26Moderate
May21Moderate
Jun12Moderate
Jul8Good
Aug7Good
Sep8Good
Oct10Good
Nov12Good
Dec21Moderate
Location & terrain

Where is Rémire-Montjoly?

Rémire-Montjoly sits at 4.9°N, 52.3°W, 7 m above sea level, in French Guiana. The nearest listed city is Cayenne, 8.0 km away.

KourouOiapoqueSaint-Laurent-du-Maroni

Topography around Rémire-Montjoly

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

Within 3 km, the terrain around Rémire-Montjoly has only modest variations in elevation — a maximum elevation change of 153 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 244 m; within 80 km, significant variations in elevation — a maximum elevation change of 483 m.

The land around Rémire-Montjoly is covered by water (53%) and trees (26%) within 3 km, water (62%) and trees (24%) within 16 km, and trees (52%) and water (42%) within 80 km.

3 km
153 m
16 km
244 m
80 km
483 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
August weather nearby: Cayenne 8.0 km · Matoury 10 km · Kourou 50 km · Oiapoque 129 km · Saint-Laurent-du-Maroni 206 km · Blauwgrond 332 km · Rainville 334 km · Beekhuizen 337 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 Rémire-Montjoly (4.9167°, -52.2667°, elevation 7 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).