Bora Bora weather in September

In September, Bora Bora sees average daytime highs of 26°C and overnight lows near 25°C, with 59 mm of rain across 12.4 wet days and about 11.9 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 57% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Bora Bora's 4th-clearest and 1st-windiest month. For the whole year in context, see Bora Bora's year-round climate.

Daytime high
26°
11th warmest
Overnight low
25°
2nd coldest
Rainfall
59 mm
12.4 wet days
Daylight
11 h 54 min
6:04 AM – 5:59 PM
Cloud cover
41%
4th clearest
Wind
25 km/h
1st windiest
Solar energy
5.88 kWh/m²
Travel score
6.6
out of 10

Bora Bora is island in French Polynesia.

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 26°C through the month.

A typical September day in Bora Bora reaches about 26°C in the afternoon and slips back to 25°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 27°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)
12625
22625
32625
42625
52625
62625
72625
82625
92625
102625
112625
122625
132625
142625
152625
162625
172625
182625
192625
202625
212625
222625
232625
242625
252625
262625
272625
282625
292625
302625

Bora Bora weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 26°27023.712.94.3
Feb28° / 26°23221.112.64.4
Mar28° / 26°17520.812.14.9
Apr28° / 26°13417.411.65.3
May27° / 26°10616.111.25.8
Jun27° / 25°7412116.5
Jul26° / 25°5510.811.16.9
Aug26° / 25°509.611.47.1
Sep26° / 25°5912.411.96.6
Oct26° / 25°10814.912.46.1
Nov27° / 25°14919.112.85.2
Dec27° / 26°28123.7134.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 22%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18317
28317
38218
48218
58218
68218
78218
88119
98020
107921
117921
127921
137921
147822
157822
167723
177723
187723
197624
207723
217723
227723
237723
247624
257624
267624
277525
287525
297426
307327

Chance of precipitation in September

Any precipitation

Bora Bora gets around 59 mm of rain over 12.4 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 41% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
238
338
438
538
638
738
839
939
1040
1140
1241
1341
1442
1542
1642
1743
1843
1943
2044
2144
2244
2344
2443
2543
2642
2742
2842
2942
3042

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1172963
2172963
3172864
4172864
5072865
6072865
7072766
8072766
9072667
10072667
11072568
12072568
13062470
14062371
15062272
16062272
17052174
18052174
19052075
20052075
21052075
22052075
23052174
24052174
25052174
26052273
27052273
28042373
29042373
30042472

Wind in September

Winds average 25 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 24 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
125breezy
225breezy
325breezy
425breezy
525breezy
625breezy
725breezy
825breezy
925breezy
1025breezy
1125breezy
1225breezy
1325breezy
1425breezy
1525breezy
1625breezy
1725breezy
1825breezy
1925breezy
2024breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3024breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over September. Sunrise moves from 6:16 AM to 5:52 AM, and sunset from 5:57 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:165:57
211.76:165:57
311.76:155:57
411.76:145:57
511.76:135:57
611.86:125:57
711.86:125:58
811.86:115:58
911.86:105:58
1011.86:095:58
1111.86:085:58
1211.86:075:58
1311.96:075:58
1411.96:065:58
1511.96:055:58
1611.96:045:59
1711.96:035:59
1811.96:025:59
1912.06:015:59
2012.06:015:59
2112.06:005:59
2212.05:595:59
2312.05:585:59
2412.05:575:59
2512.15:566:00
2612.15:566:00
2712.15:556:00
2812.15:546:00
2912.15:536:00
3012.15:526:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.88 kWh/m².

For context, solar energy here swings from a low near 4.25 kWh/m² to a high of 6.54 kWh/m² in November across the year — September's 5.88 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
185.9Bright
196.0Bright
206.0Bright
216.0Intense
226.0Intense
236.0Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Hazard calendar for Bora Bora

In seasonPeak

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

Bora Bora's rainy season runs November–April, when most of the year's rain falls.

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

Is September a good time to visit Bora Bora?

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

6.6
Sightseeing
3rd-best month of the year
6.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Bora Bora for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Bora Bora in September

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

In September, Bora Bora sees daytime highs around 26°C and nights near 25°C. Worth packing: light clothes, rain gear, sun protection and a windbreaker. About 12 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Bora Bora in September

The nearest coast averages about 27°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 18 km away) is warmest in March at about 29°C and coldest in August 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
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun28Warm
Jul27Warm
Aug27Warm
Sep27Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Bora Bora in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bora Bora peaks around February 14 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 14UV 16Jun 17UV 7
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7Very high
Jul9Very high
Aug10Extreme
Sep13Extreme
Oct13Extreme
Nov15Extreme
Dec14Extreme
Location & terrain

Where is Bora Bora?

Bora Bora sits at 16.5°S, 151.7°W, 0 m above sea level, in French Polynesia. The nearest listed city is Moorea, 233 km away.

MooreaFaaaPapeetePunaauia

Topography around Bora Bora

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

Within 3 km, the terrain around Bora Bora has significant variations in elevation — a maximum elevation change of 542 m around an average of 47 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 542 m; within 80 km, large variations in elevation — a maximum elevation change of 937 m.

The land around Bora Bora is covered by water (50%) and trees (42%) within 3 km, water (97%) within 16 km, and water (97%) within 80 km.

3 km
542 m
16 km
542 m
80 km
937 m
treesgrasslandartificial surfaceswater
September weather nearby: Moorea 233 km · Faaa 256 km · Papeete 258 km · Punaauia 260 km · Avarua 994 km · Alofi 1,945 km · Pago Pago 2,047 km · Apia 2,169 km

French Polynesia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / E / F
110 / 220 V · 50 / 60 Hz
GDP per capita
$22,440
2024
Safe drinking water
90%
of population, 2024
Homicide rate
0.4
per 100k, 2009
Income group
High
World Bank
Religion
Protestant 54%Roman Catholic 30%other 10%no religion 6%

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 Bora Bora (-16.4996°, -151.7371°, elevation 0 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).