Madagascar · 1991–2020

Best time to visit
Mahavelona.

September leads for comfortable weather in Mahavelona: typically 26.7°C by day, 17.6°C at night, with 159 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.7°C

Typical low17.6°C

Rain in September159 mm

Comfort

September

September · October · August

56climate match

Beach

November

November · October · September

63climate match

Outdoors

September

September · October · November

28climate match

The weakest month is January, scoring 5 against September’s 56 — 455 mm of rain falls.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

531.3° / 22.9°

Feb

531.4° / 23°

Mar

530.9° / 22.8°

Apr

530° / 21.7°

May

2028.5° / 19.9°

Jun

3026.9° / 18.2°

Jul

4125.8° / 17.1°

Aug

4726° / 17.1°

Sep

5626.7° / 17.6°

Oct

5427.9° / 19°

Nov

4429.2° / 20.4°

Dec

1830.6° / 22.2°

Monthly climate evidence for Mahavelona — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 14 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	31.3°C	22.9°C	455 mm	20.5	28.4°C	13 h 05	5	Good coverage
February	31.4°C	23°C	525 mm	19.7	28.5°C	12 h 42	5	Good coverage
March	30.9°C	22.8°C	505 mm	20.9	28.4°C	12 h 14	5	Strong coverage
April	30°C	21.7°C	394 mm	19.1	27.9°C	11 h 43	5	Strong coverage
May	28.5°C	19.9°C	325 mm	20.5	27.0°C	11 h 18	20	Strong coverage
June	26.9°C	18.2°C	304 mm	21.4	25.7°C	11 h 05	30	Strong coverage
July	25.8°C	17.1°C	269 mm	21.7	24.5°C	11 h 10	41	Strong coverage
August	26°C	17.1°C	223 mm	20.7	24.1°C	11 h 31	47	Strong coverage
September	26.7°C	17.6°C	159 mm	17.7	24.3°C	12 h 01	56	Strong coverage
October	27.9°C	19°C	140 mm	15.6	25.3°C	12 h 32	54	Strong coverage
November	29.2°C	20.4°C	167 mm	14.2	26.5°C	12 h 58	44	Good coverage
December	30.6°C	22.2°C	275 mm	18.2	27.8°C	13 h 11	18	Strong coverage

Records at TOAMASINA, 1975–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	37.7°C10 Jan 1995	18.0°C2 Jan 1999	177 mm2 Jan 2010	958 mm2007 · driest 43 mm in 2000	45
February	38.0°C10 Feb 1979	17.5°C18 Feb 2008	274 mm16 Feb 2022	982 mm2002 · driest 71 mm in 1983	45
March	36.7°C2 Mar 2007	17.0°C14 Mar 2008	340 mm5 Mar 1981	843 mm1994 · driest 101 mm in 1990	48
April	35.0°C18 Apr 1978	15.0°C23 Apr 1980	282 mm12 Apr 2006	781 mm1991 · driest 10 mm in 1999	46
May	34.2°C21 May 2018	12.7°C9 May 1987	282 mm4 May 2019	733 mm2002 · driest 45 mm in 1991	48
June	30.4°C6 Jun 2015	11.0°C10 Jun 1978	330 mm19 Jun 1981	430 mm2005 · driest 63 mm in 1979	47
July	32.0°C26 Jul 2000	11.8°C19 Jul 2001	320 mm4 Jul 1979	570 mm1979 · driest 20 mm in 2024	47
August	30.2°C4 Aug 2005	10.0°C25 Aug 1996	95 mm25 Aug 2006	406 mm2002 · driest 32 mm in 1999	47
September	30.6°C26 Sep 1987	9.5°C28 Sep 1990	93 mm9 Sep 2019	279 mm2003 · driest 18 mm in 1976	49
October	33.2°C28 Oct 2005	11.0°C10 Oct 1979	145 mm27 Oct 1982	389 mm1982 · driest 8 mm in 2016	47
November	33.8°C20 Nov 1997	11.0°C16 Nov 1988	147 mm1 Nov 1986	341 mm2017 · driest 11 mm in 2008	46
December	37.0°C27 Dec 1978	16.0°C24 Dec 1977	238 mm29 Dec 1982	661 mm2004 · driest 19 mm in 1987	46

Typical days per month at TOAMASINA, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	27	24	8
February	26	23	8
March	29	25	10
April	28	16	7
May	28	3	7
June	25	<1	7
July	23	<1	8
August	25	0	5
September	26	0	4
October	27	1	2
November	27	7	3
December	28	22	5

How often, not how much — every day in TOAMASINA’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	35%	63%	31%	94%	30.4–32.2°C
February	29%	68%	38%	95%	30.7–32.2°C
March	30%	68%	36%	97%	30.0–31.6°C
April	36%	63%	30%	91%	29.1–30.8°C
May	33%	66%	27%	94%	27.6–29.1°C
June	28%	69%	26%	96%	26.1–27.8°C
July	29%	69%	28%	96%	25.0–26.9°C
August	32%	68%	22%	93%	25.2–26.9°C
September	43%	56%	14%	87%	25.9–27.5°C
October	52%	48%	11%	75%	27.0–29.0°C
November	53%	47%	13%	79%	28.5–30.0°C
December	41%	57%	23%	86%	29.6–31.7°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1985Each stripe is one year’s mean temperature against the 25-year average. Warmest: 2019. Coolest: 1986.2019

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1062146
NOAA station: MA000067095 · TOAMASINA
Station distance: 49.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude -17.68°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 14 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from TOAMASINA is what differs

Toamasina→Volobe→Vohitsara→Vohitraomby→Vohitrandiana→Vohimarina→

Or put two places side by side: Mahavelona vs Toamasina

Best time to visitMahavelona.

September

November

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Mahavelona.

The whole year,
without the guesswork.

Nearby, measured,
and named.