Antananarivo weather in January
In January, Antananarivo has daytime highs averaging 25 °C, nights around 17 °C, with 22 wet days. Figures are 1991–2020 climate normals.
- 24.7°C Average high
- 16.7°C Average low
- 22days Wet days
- 302mm Rainfall
- 13h Daylight
Daily temperatures through January
How January develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 January | 24.6 °C | 16.6 °C | 68 % |
| 11–20 January | 24.7 °C | 16.6 °C | 71 % |
| 21–31 January | 24.8 °C | 16.8 °C | 74 % |
- Rain is most likely over days 21–31 of January (74 % of days) and least likely over days 1–10 (68 %).
What to expect
| Measure | Typical January | Share of the month |
|---|---|---|
| Days above 25 °C | 15 of 31 | 48 % |
| Days above 30 °C | 0 of 31 | 0 % |
| Days below 0 °C | 0 of 31 | 0 % |
| Days with more than 1 mm rain | 22 of 31 | 71 % |
Conditions in January
| Measure | Average |
|---|---|
| Mean temperature | 20 °C |
| Record high (1991–2020) | 30 °C |
| Record low (1991–2020) | 12 °C |
| Relative humidity | 82 % |
| Wind speed | 15 km/h |
| Cloud cover | 84 % |
January compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 24.7 °C | 302 mm | 84 % |
| February | 24.4 °C | 255 mm | 82 % |
| March | 24.4 °C | 140 mm | 75 % |
| November | 26.2 °C | 84 mm | 61 % |
| December | 25.7 °C | 192 mm | 75 % |
See all twelve months for Antananarivo
- January is the 4th warmest month here.
- It is the 12th driest month of the year.
- It ranks 12th for least cloud cover.
- Days last about 13 hours from sunrise to sunset.
- It rains on 22 of 31 days — 71 % of the month.
- Nights are about 8.0 °C cooler than the middle of the day.
- The hottest January day on record since 1991 reached 30 °C, 5.3 °C above the usual daytime high.
Nearby destinations in January
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| Antananarivo | 25 °C | 22 | – |
| Antsirabe | 24 °C | 24 | – |
| Toamasina | 28 °C | 25 | 28 |
| Fianarantsoa | 25 °C | 23 | – |
QuestionsJanuary in Antananarivo, answered
How warm is Antananarivo in January?
Daily highs average 25 °C and nights fall to about 17 °C, a spread of 8.0 °C between afternoon and dawn. That makes January the 2nd warmest month of the year here.
Does it rain much in Antananarivo in January?
January averages 302 mm of rain, spread over about 22 of the 31 days — 71 % of the month. Cloud cover averages 84 % of the sky.
How long are the days in January?
Antananarivo averages 13 hours between sunrise and sunset in January. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.