Rémire-Montjoly in Fall
In fall (September, October and November), Rémire-Montjoly sees average daytime highs around 30°C and overnight lows near 25°C, with 185 mm of rain over about 37 wet days across the season. It is the warmest season of the year and the driest season of the year.
Across fall, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 50% of the time across fall, and the air most often feels oppressive.
Fall is Rémire-Montjoly's best season of the year to visit on our travel score. Rémire-Montjoly has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Rémire-Montjoly's year-round climate.
- Avg daytime high
- 30°C
- warmest season of the year
- Avg overnight low
- 25°C
- Rainfall
- 185 mm
- 37 wet days
- Avg wind
- 15 km/h
- Travel score
- 4.9
- best season of the year
- Months
- Sep · Oct · Nov
Temperature in Rémire-Montjoly in Fall
Across fall, daytime highs hold fairly steady around 30°C.
A typical fall day in Rémire-Montjoly reaches about 30°C and drops to 25°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Rémire-Montjoly
Once humidity and wind are folded in, fall brings about 91 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Rémire-Montjoly weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 25° | 244 | 26.6 | 11.7 | 4.0 |
| Feb | 27° / 25° | 205 | 22.3 | 11.8 | 4.2 |
| Mar | 28° / 25° | 173 | 23.9 | 12 | 4.3 |
| Apr | 28° / 25° | 258 | 25 | 12.1 | 4.0 |
| May | 28° / 25° | 411 | 29.1 | 12.2 | 3.5 |
| Jun | 28° / 25° | 344 | 28.5 | 12.3 | 3.5 |
| Jul | 29° / 25° | 186 | 24.8 | 12.3 | 4.0 |
| Aug | 30° / 25° | 67 | 13.9 | 12.2 | 5.0 |
| Sep | 30° / 25° | 23 | 7.2 | 12 | 5.5 |
| Oct | 30° / 25° | 40 | 10.1 | 11.9 | 5.1 |
| Nov | 29° / 25° | 122 | 19.6 | 11.8 | 4.2 |
| Dec | 28° / 25° | 253 | 26.5 | 11.7 | 3.8 |
Cloud cover in Fall
The sky is clear or mostly clear about 50% of the time across fall.
Chance of precipitation in Fall
Rémire-Montjoly gets around 185 mm of rain over 37 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 15 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 06 min in early September to 11 h 42 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.9 kWh/m².
Hazard calendar for Rémire-Montjoly
None of Rémire-Montjoly's seasonal hazards peak in fall. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Rémire-Montjoly's rainy season runs April–July, when most of the year's rain falls.
Is fall a good time to visit Rémire-Montjoly?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall 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 Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Rémire-Montjoly sees daytime highs around 30°C and nights near 25°C. Pack light clothes, rain gear and sun protection. About 37 days see rain.
Sea temperature near Rémire-Montjoly in Fall
The nearest coast averages about 28°C across fall — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Warm |
| May | 28 | Warm |
| Jun | 28 | Tropical |
| Jul | 28 | Tropical |
| Aug | 28 | Tropical |
| Sep | 28 | Tropical |
| Oct | 28 | Tropical |
| Nov | 28 | Warm |
| Dec | 27 | Warm |
UV index in Rémire-Montjoly in Fall
Clear-sky midday UV across fall averages around 12 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 13 | 14 | 14 | 13 | 11 | 11 | 11 | 12 | 12 | 11 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 13 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 11 | Extreme |
| Dec | 10 | Extreme |
Air quality in Rémire-Montjoly in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 26 | 28 | 26 | 26 | 21 | 12 | 8 | 7 | 8 | 10 | 12 | 21 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 26 | Moderate |
| Feb | 28 | Moderate |
| Mar | 26 | Moderate |
| Apr | 26 | Moderate |
| May | 21 | Moderate |
| Jun | 12 | Moderate |
| Jul | 8 | Good |
| Aug | 7 | Good |
| Sep | 8 | Good |
| Oct | 10 | Good |
| Nov | 12 | Good |
| Dec | 21 | Moderate |
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.
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.
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.