Fomboni weather in May

In May, Fomboni sees average daytime highs of 27°C and overnight lows near 26°C, with 31 mm of rain across 6.9 wet days and about 11.4 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 75% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of May to 11 h 18 min by month's end. Set against the rest of the year, May is Fomboni's 6th-clearest and 3rd-windiest month. For the whole year in context, see Fomboni's year-round climate.

Daytime high
27°
6th warmest
Overnight low
26°
7th coldest
Rainfall
31 mm
6.9 wet days
Daylight
11 h 24 min
6:18 AM – 5:44 PM
Cloud cover
31%
6th clearest
Wind
20 km/h
3rd windiest
Solar energy
5.1 kWh/m²
Travel score
7.4
out of 10

Fomboni is Capital of Mohéli.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical May day in Fomboni reaches about 27°C in the afternoon and slips back to 26°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 28°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12827
22827
32827
42827
52826
62826
72826
82826
92726
102726
112726
122726
132726
142726
152726
162726
172726
182726
192726
202726
212726
222726
232726
242726
252726
262726
272726
282726
292726
302726
312726

How May really feels in Fomboni

Once humidity and wind are folded in, May 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

May 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 May compares with the rest of the year at a glance. May is the 6th-warmest and 6th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 75% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 12%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38218
48416
58416
68416
78515
88614
98614
108614
118614
128713
138713
148713
158713
168812
178812
188812
198911
208911
218911
229010
239010
24919
25919
26919
27928
28928
29928
30928
31928

Chance of precipitation in May

Any precipitation

Fomboni gets around 31 mm of rain over 6.9 wet days in May. 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 35% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
234
333
432
530
629
728
827
926
1025
1125
1224
1323
1423
1522
1622
1721
1820
1920
2019
2119
2218
2318
2418
2517
2617
2716
2816
2916
3015
3115

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 79% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1048412
2048511
3058510
405869
506868
606868
707867
808866
909865
10010855
11011854
12012844
13013843
14014833
15015832
16016822
17017812
18118801
19119791
20120781
21121771
22122770
23123760
24124750
25125740
26126730
27227710
28228700
29230680
30232660
31234640

Wind in May

Winds average 20 km/h in May.

Across May, daily wind ranges from about 19 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
720light breeze
820light breeze
920light breeze
1020breezy
1120breezy
1220breezy
1320breezy
1420breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 36 min at the start of May to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over May. Sunrise moves from 6:15 AM to 6:22 AM, and sunset from 5:49 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:155:49
211.66:155:49
311.56:155:48
411.56:165:48
511.56:165:48
611.56:165:47
711.56:165:47
811.56:165:47
911.56:175:46
1011.56:175:46
1111.56:175:46
1211.56:175:45
1311.56:175:45
1411.56:185:45
1511.46:185:45
1611.46:185:44
1711.46:185:44
1811.46:195:44
1911.46:195:44
2011.46:195:44
2111.46:195:43
2211.46:205:43
2311.46:205:43
2411.46:205:43
2511.46:215:43
2611.46:215:43
2711.46:215:43
2811.46:215:43
2911.36:225:43
3011.36:225:43
3111.36:225:43

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.1 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 — May's 5.1 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in May

Hazard calendar for Fomboni

In seasonPeak

None of Fomboni's seasonal hazards are active in May. 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 May a good time to visit Fomboni?

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

7.4
Sightseeing
7th-best month of the year
7.6
Beach & pool
7th-best month of the year

May 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 May

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

In May, Fomboni sees daytime highs around 27°C and nights near 26°C. Pack light clothes. Worth having: sun protection and a windbreaker. About 7 days see rain.

light clothessun protectiona windbreaker

Sea temperature near Fomboni in May

The nearest coast averages about 28°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 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
May 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).