Sainte-Marie weather in September

In September, Sainte-Marie sees average daytime highs of 29°C and overnight lows near 25°C, with 132 mm of rain across 23.9 wet days and about 12.1 hours of daylight. It is the 1st-warmest and 2nd-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 21% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Sainte-Marie's 12th-clearest and 11th-windiest month. For the whole year in context, see Sainte-Marie's year-round climate.

Daytime high
29°
1st warmest
Overnight low
25°
12th coldest
Rainfall
132 mm
23.9 wet days
Daylight
12 h 06 min
5:56 AM – 6:01 PM
Cloud cover
68%
12th clearest
Wind
12 km/h
11th windiest
Solar energy
6.01 kWh/m²
Travel score
3.7
out of 10

Sainte-Marie is human settlement in France.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Sainte-Marie reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925

How September really feels in Sainte-Marie

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Sainte-Marie weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 23°5017.811.25.8
Feb27° / 23°3513.111.56.2
Mar27° / 23°3814.111.96.1
Apr28° / 24°4514.912.35.5
May29° / 25°6317.112.74.8
Jun29° / 25°7518.612.94.4
Jul29° / 25°10323.812.84.0
Aug29° / 25°11625.412.53.7
Sep29° / 25°13223.912.13.7
Oct28° / 25°14424.711.73.8
Nov28° / 24°12522.811.34.5
Dec27° / 24°6319.211.15.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24555
34555
44555
54456
64456
74357
84357
94258
104159
114060
124060
133961
143862
153763
163763
173664
183664
193664
203664
213664
223664
233664
243763
253763
263664
273664
283664
293664
303664

Chance of precipitation in September

Any precipitation

Sainte-Marie gets around 132 mm of rain over 23.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 79% and peaks near 82% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
178
277
377
477
577
678
778
878
978
1078
1178
1278
1379
1479
1579
1679
1779
1880
1980
2080
2180
2281
2381
2481
2581
2682
2782
2882
2982
3082

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 74% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
17327
27327
37327
47327
57327
67327
77327
87327
97327
107327
117327
127327
137327
147426
157426
167426
177426
187426
197426
207426
217426
227426
237426
247426
257426
267426
277426
287426
297426
307426

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 5:55 AM to 5:57 AM, and sunset from 6:12 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:556:12
212.35:556:12
312.35:556:11
412.25:556:10
512.25:556:09
612.25:556:09
712.25:556:08
812.25:556:07
912.25:556:06
1012.25:566:05
1112.25:566:05
1212.15:566:04
1312.15:566:03
1412.15:566:02
1512.15:566:02
1612.15:566:01
1712.15:566:00
1812.15:565:59
1912.05:565:58
2012.05:565:58
2112.05:565:57
2212.05:565:56
2312.05:565:55
2412.05:565:54
2512.05:565:54
2611.95:565:53
2711.95:575:52
2811.95:575:51
2911.95:575:51
3011.95:575:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.01 kWh/m².

For context, solar energy here swings from a low near 4.88 kWh/m² to a high of 6.69 kWh/m² in April across the year — September's 6.01 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.0Intense
146.0Intense
156.0Intense
166.0Bright
176.0Bright
186.0Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Sainte-Marie

In seasonPeak

In September, Sainte-Marie sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.

Sainte-Marie sits in the Atlantic hurricane belt; the season peaks August–October.

Sainte-Marie's rainy season runs June–November, when most of the year's rain falls.

Sainte-Marie sees seasonal dust haze (June–July), heaviest in June.

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

Is September a good time to visit Sainte-Marie?

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

3.7
Sightseeing
11th-best month of the year
4.7
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Sainte-Marie.

What to pack for Sainte-Marie in September

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

In September, Sainte-Marie sees daytime highs around 29°C and nights near 25°C. Pack light clothes, rain gear and sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Sainte-Marie in September

The nearest coast averages about 29°C in September — 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 September at about 29°C and coldest in February 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
Apr27Warm
May28Warm
Jun28Warm
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in Sainte-Marie in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks 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 Sainte-Marie peaks around March 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 22UV 14Dec 13UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec8Very high

Air quality in Sainte-Marie in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sainte-Marie is worst in June — around 29 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJun 2028 µg/m³Dec 2310 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar11Good
Apr15Moderate
May18Moderate
Jun29Moderate
Jul26Moderate
Aug21Moderate
Sep16Moderate
Oct18Moderate
Nov13Moderate
Dec10Good
Location & terrain

Where is Sainte-Marie?

Sainte-Marie sits at 14.8°N, 61.0°W, 14 m above sea level, in Martinique. The nearest listed city is La Trinité, 6.0 km away.

La TrinitéLe RobertSaint-JosephLe LamentinLe FrançoisFort-de-FranceDucos

Topography around Sainte-Marie

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

Within 3 km, the terrain around Sainte-Marie has only modest variations in elevation — a maximum elevation change of 240 m around an average of 38 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,198 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,367 m.

The land around Sainte-Marie is covered by water (46%) and trees (44%) within 3 km, water (52%) and trees (44%) within 16 km, and water (89%) within 80 km.

3 km
240 m
16 km
1,198 m
80 km
1,367 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: La Trinité 6.0 km · Le Robert 13 km · Saint-Joseph 13 km · Le Lamentin 19 km · Le François 21 km · Fort-de-France 22 km · Ducos 23 km · Roseau 72 km

Martinique 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 Sainte-Marie (14.7835°, -60.9923°, elevation 14 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).