Mont-Dore weather in September

In September, Mont-Dore sees average daytime highs of 22°C and overnight lows near 18°C, with 48 mm of rain across 6.8 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Mont-Dore's 1st-clearest and 11th-windiest month. For the whole year in context, see Mont-Dore's year-round climate.

Daytime high
22°
10th warmest
Overnight low
18°
3rd coldest
Rainfall
48 mm
6.8 wet days
Daylight
11 h 54 min
5:52 AM – 5:44 PM
Cloud cover
46%
1st clearest
Wind
15 km/h
11th windiest
Solar energy
5.17 kWh/m²
Travel score
7.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical September day in Mont-Dore reaches about 22°C in the afternoon and slips back to 18°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 23°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

15°18°20°23°25°151015202530
Avg high (°C)Avg low (°C)
12117
22117
32117
42117
52117
62117
72117
82117
92117
102117
112117
122117
132118
142118
152218
162218
172218
182218
192218
202218
212218
222218
232218
242218
252218
262218
272218
282218
292218
302218

Mont-Dore weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 23°1401513.25.9
Feb27° / 23°13816.312.85.4
Mar26° / 23°18818.912.25.3
Apr25° / 22°12415.311.56.1
May23° / 20°9911.410.96.6
Jun22° / 19°789.710.76.6
Jul21° / 17°648.210.86.8
Aug21° / 17°67811.26.8
Sep22° / 18°486.811.97.3
Oct23° / 19°387.412.57.4
Nov24° / 20°658.513.17.3
Dec26° / 22°881213.36.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 26% of September, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16832
26931
37030
47030
57228
67327
77327
87327
97327
107327
117327
127327
137228
147228
157228
167228
177129
187129
197129
207129
217228
227129
237129
247129
257129
267129
277129
287129
297129
307129

Chance of precipitation in September

Any precipitation

Mont-Dore gets around 48 mm of rain over 6.8 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 23% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
124
224
324
424
524
624
724
824
925
1025
1125
1226
1326
1426
1526
1625
1725
1824
1924
2023
2123
2222
2321
2421
2520
2619
2719
2818
2918
3018

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
129352880
229352870
328352970
428362970
528363070
627363070
727363170
826363170
925363170
1025363270
1124363270
1224373280
1323373280
1423373280
1522383290
1622383190
1721383190
18213831100
19213831100
20203831110
21203831110
22203731110
23193731121
24193632121
25193632121
26193532131
27193433131
28193433141
29183334141
30183235141

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over September. Sunrise moves from 6:07 AM to 5:38 AM, and sunset from 5:40 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:075:40
211.66:065:40
311.66:055:41
411.66:045:41
511.66:035:41
611.76:025:41
711.76:015:42
811.76:005:42
911.75:595:42
1011.75:585:43
1111.85:575:43
1211.85:565:43
1311.85:555:43
1411.85:545:44
1511.95:535:44
1611.95:525:44
1711.95:515:45
1811.95:505:45
1911.95:495:45
2012.05:485:45
2112.05:475:46
2212.05:465:46
2312.05:455:46
2412.05:445:47
2512.15:435:47
2612.15:425:47
2712.15:415:48
2812.15:405:48
2912.25:395:48
3012.25:385:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.17 kWh/m².

For context, solar energy here swings from a low near 3.1 kWh/m² to a high of 6.43 kWh/m² in December across the year — September's 5.17 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.8Bright
64.8Bright
74.8Bright
84.9Bright
94.9Bright
105.0Bright
115.0Bright
125.0Bright
135.1Bright
145.1Bright
155.1Bright
165.2Bright
175.2Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.4Bright
245.5Bright
255.5Bright
265.5Bright
275.6Bright
285.6Bright
295.6Bright
305.7Bright
Planning a trip in September

Hazard calendar for Mont-Dore

In seasonPeak

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

Mont-Dore sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Mont-Dore's rainy season runs December–May, when most of the year's rain falls.

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

Is September a good time to visit Mont-Dore?

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

7.3
Sightseeing
2nd-best month of the year
4.8
Beach & pool
9th-best month of the year

September is one of the better times to visit Mont-Dore for general sightseeing.

What to pack for Mont-Dore in September

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

In September, Mont-Dore sees daytime highs around 22°C and nights near 18°C. Worth packing: sun protection. About 7 days see rain.

sun protection

Sea temperature near Mont-Dore in September

The nearest coast averages about 22°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 14 km away) is warmest in February at about 27°C and coldest in August near 22°C.

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

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb27Warm
Mar27Warm
Apr26Warm
May25Warm
Jun24Refreshing
Jul23Refreshing
Aug22Refreshing
Sep22Refreshing
Oct23Refreshing
Nov24Warm
Dec25Warm

UV index in Mont-Dore in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mont-Dore peaks around February 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 13UV 14Jun 23UV 6
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug7Very high
Sep10Extreme
Oct12Extreme
Nov12Extreme
Dec14Extreme
Location & terrain

Where is Mont-Dore?

Mont-Dore sits at 22.3°S, 166.6°E, 11 m above sea level, in New Caledonia. The nearest listed city is Noumea, 12 km away.

BourailOuvéa

Topography around Mont-Dore

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

Within 3 km, the terrain around Mont-Dore has large variations in elevation — a maximum elevation change of 750 m around an average of 90 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,070 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,604 m.

The land around Mont-Dore is covered by water (50%) and trees (35%) within 3 km, water (45%) and trees (37%) within 16 km, and water (74%) and trees (20%) within 80 km.

3 km
750 m
16 km
1,070 m
80 km
1,604 m
treesgrasslandartificial surfaceswatermangroves
September weather nearby: Noumea 12 km · Dumbéa 16 km · Bourail 135 km · Ouvéa 179 km · Port Vila 535 km · Kingston 768 km · Sigatoka 1,230 km · Nadi 1,237 km

New Caledonia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
220 V · 50 Hz
GDP per capita
$29,213
2024
Safe drinking water
97%
of population, 2024
Homicide rate
3.1
per 100k, 2009
Income group
High
World Bank
Religion
Christian 85%unaffiliated 10%Muslim 3%other 2%

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 Mont-Dore (-22.2626°, 166.5662°, elevation 11 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).