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Weather extremes

How extreme does Toamasina's weather get?

The hottest, coldest, wettest and snowiest days Toamasina has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1973–present), from the Toamasina station 4 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Toamasina has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
104°F Mar 12, 1983

That is about 16°F hotter than a normal March afternoon in Toamasina (typical high near 88°F).

The three most extreme on record

1 104°F Mar 12, 1983
2 103°F Mar 26, 2014
3 103°F Nov 13, 2014
❄️ Coldest night
43°F Jul 4, 1980

About 20°F colder than a normal July night in Toamasina (typical low near 63°F).

The three most extreme on record

1 43°F Jul 4, 1980
2 44°F Aug 9, 2000
3 44°F Jul 8, 2018
🌧️ Most rain in one day
19.06 in May 12, 2002

More rain in a single day than Toamasina usually gets in the whole month of May (typical May total about 11.6 in).

The three most extreme on record

1 19.06 in May 12, 2002
2 14.33 in Sep 1, 1991
3 13.39 in Jun 16, 1973

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

30°50°70°90°110°130° all-time high 104°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Toamasina's record heat sits well above even a hot day for the season — March's 104°F is about 16°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Toamasina's warmest days reach the high 80s°F and its coldest nights drop to the low 60s°F. But across the record it has gone as high as 104°F and as low as 43°F. A single day has delivered over 19 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Toamasina, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →