Fomboni weather in August

In August, Fomboni sees average daytime highs of 25°C and overnight lows near 24°C, with 8 mm of rain across 2.4 wet days and about 11.6 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 83% of the time in August, and the air most often feels muggy.

Daylight stretches from about 11 h 30 min at the start of August to 11 h 42 min by month's end. Set against the rest of the year, August is Fomboni's 2nd-clearest and 4th-windiest month. For the whole year in context, see Fomboni's year-round climate.

Daytime high
25°
12th warmest
Overnight low
24°
1st coldest
Rainfall
8 mm
2.4 wet days
Daylight
11 h 36 min
6:21 AM – 5:57 PM
Cloud cover
24%
2nd clearest
Wind
18 km/h
4th windiest
Solar energy
5.53 kWh/m²
Travel score
8.8
out of 10

Fomboni is Capital of Mohéli.

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical August day in Fomboni reaches about 25°C in the afternoon and slips back to 24°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 25°C. Set against its neighbours, August runs on par with July and on par with September.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12524
22524
32524
42524
52524
62524
72524
82524
92524
102524
112524
122524
132524
142524
152524
162524
172524
182524
192524
202524
212524
222524
232524
242524
252524
262524
272524
282524
292524
302524
312524

How August really feels in Fomboni

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

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Fomboni weather by month

How August compares with the rest of the year at a glance. August is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 27°16817.612.65.1
Feb28° / 27°15916.912.44.8
Mar28° / 27°13919.512.14.7
Apr28° / 27°8814.111.75.8
May27° / 26°316.911.47.4
Jun26° / 25°174.111.38.1
Jul25° / 24°133.311.48.5
Aug25° / 24°82.411.68.8
Sep25° / 24°72.211.98.8
Oct26° / 25°133.212.38.4
Nov27° / 26°314.912.67.8
Dec28° / 26°841312.76.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 83% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 8% of August, with mostly cloudy or overcast conditions the remaining 8%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18911
28911
38911
48911
58911
68911
78911
88911
99010
109010
11919
12919
13919
14919
15919
16928
17928
18928
19928
20946
21946
22946
23946
24946
25946
26946
27946
28955
29955
30964
31964

Chance of precipitation in August

Any precipitation

Fomboni gets around 8 mm of rain over 2.4 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 8% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
210
310
410
59
69
78
88
97
107
117
127
137
147
157
167
177
187
197
208
218
228
238
248
258
268
278
288
297
307
317

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 88% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
17849
27849
37849
47849
57858
66868
76868
86877
96877
106877
115887
125896
135896
144906
154906
164906
173916
183916
193916
203916
212917
222917
232917
242908
252908
262899
272899
2828810
2928810
3028810
3128711

Wind in August

Winds average 18 km/h in August.

Across August, daily wind ranges from about 15 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
220breezy
320breezy
420light breeze
520light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 30 min at the start of August to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over August. Sunrise moves from 6:28 AM to 6:13 AM, and sunset from 5:55 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:285:55
211.56:275:55
311.56:275:55
411.56:275:55
511.56:265:55
611.56:265:56
711.56:255:56
811.56:255:56
911.56:255:56
1011.56:245:56
1111.56:245:56
1211.56:235:56
1311.66:235:56
1411.66:225:57
1511.66:225:57
1611.66:215:57
1711.66:215:57
1811.66:205:57
1911.66:205:57
2011.66:195:57
2111.66:195:57
2211.76:185:57
2311.76:185:57
2411.76:175:57
2511.76:165:57
2611.76:165:57
2711.76:155:57
2811.76:155:57
2911.76:145:58
3011.76:135:58
3111.76:135:58

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.53 kWh/m².

For context, solar energy here swings from a low near 4.72 kWh/m² to a high of 6.95 kWh/m² in November across the year — August's 5.53 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.3Bright
85.3Bright
95.3Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.6Bright
195.6Bright
205.6Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in August

Hazard calendar for Fomboni

In seasonPeak

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

Fomboni sits in the South Indian Ocean cyclone belt; the season peaks January–March.

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

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

Is August a good time to visit Fomboni?

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

8.8
Sightseeing
1st-best month of the year
7.8
Beach & pool
3rd-best month of the year

August is one of the better times to visit Fomboni for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Fomboni in August

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

In August, Fomboni sees daytime highs around 25°C and nights near 24°C. Worth packing: light clothes and sun protection.

light clothessun protection

Sea temperature near Fomboni in August

The nearest coast averages about 26°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 March at about 30°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar30Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec29Tropical

UV index in Fomboni 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 Fomboni peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 15UV 15Jun 20UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct13Extreme
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Fomboni?

Fomboni sits at 12.3°S, 43.7°E, 18 m above sea level, in Comoros. The nearest listed city is Moutsamoudou, 73 km away.

MoutsamoudouMoroni

Topography around Fomboni

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

Within 3 km, the terrain around Fomboni has significant variations in elevation — a maximum elevation change of 554 m around an average of 100 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 780 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,346 m.

The land around Fomboni is covered by trees (52%) and water (39%) within 3 km, water (75%) and trees (24%) within 16 km, and water (92%) within 80 km.

3 km
554 m
16 km
780 m
80 km
2,346 m
treesgrasslandartificial surfaceswater
August weather nearby: Moutsamoudou 73 km · Moroni 84 km · Koungou 166 km · Mtsapéré 169 km · Kaouéni 169 km · Mamoudzou 170 km · Dzaoudzi 173 km · Labattoir 176 km

Comoros travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 49% of US
price level, 2025
GDP per capita
$2,056
2025
Happiness
3.9 / 10
World Happiness, 2025
Road deaths
26.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Muslim 98%ethnic religionist 1%Christian 1%other 0%

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 Fomboni (-12.2876°, 43.7434°, elevation 18 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).