| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 31.6° | 23° | 246.3mm | 16 | 52 |
| February | 31.4° | 22.8° | 226mm | 19 | 52 |
| March | 31.7° | 22.7° | 256.2mm | 12 | 57 |
| April | 32° | 22.6° | 55.3mm | 9 | 62 |
| May | 31.5° | 21.6° | 10.9mm | 5 | 72 |
| June | 30.5° | 20.1° | — | — | 80 |
| July | 29.8° | 19.4° | 26.3mm | 4 | 81 |
| August | 29.9° | 19.4° | 3mm | 1 | 86 |
| September | 30.5° | 20.1° | 9.9mm | 7 | 72 |
| October | 31.7° | 21.2° | 7.6mm | 6 | 69 |
| November | 32.7° | 22.4° | 5mm | 1.5 | 74 |
| December | 32.9° | 23.1° | 207.7mm | 14.5 | 47 |
January in Antsiranana averages a daily high of 31.6°C with nights around 23°C. Expect roughly 16 wet days totalling 246.3mm. Demanding conditions — pack for it and plan indoor options.
February in Antsiranana averages a daily high of 31.4°C with nights around 22.8°C. Expect roughly 19 wet days totalling 226mm. Demanding conditions — pack for it and plan indoor options.
March in Antsiranana averages a daily high of 31.7°C with nights around 22.7°C. Expect roughly 12 wet days totalling 256.2mm. Generally workable, with some weather to plan around.
April in Antsiranana averages a daily high of 32°C with nights around 22.6°C. Expect roughly 9 wet days totalling 55.3mm. Generally workable, with some weather to plan around.
May in Antsiranana averages a daily high of 31.5°C with nights around 21.6°C. Expect roughly 5 wet days totalling 10.9mm. Generally workable, with some weather to plan around.
June in Antsiranana averages a daily high of 30.5°C with nights around 20.1°C. Comfortable conditions for being outdoors all day.
July in Antsiranana averages a daily high of 29.8°C with nights around 19.4°C. Expect roughly 4 wet days totalling 26.3mm. Comfortable conditions for being outdoors all day.
August in Antsiranana averages a daily high of 29.9°C with nights around 19.4°C. Rain is rare — about 1 wet days and 3mm across the month. Comfortable conditions for being outdoors all day.
September in Antsiranana averages a daily high of 30.5°C with nights around 20.1°C. Expect roughly 7 wet days totalling 9.9mm. Generally workable, with some weather to plan around.
October in Antsiranana averages a daily high of 31.7°C with nights around 21.2°C. Expect roughly 6 wet days totalling 7.6mm. Generally workable, with some weather to plan around.
November in Antsiranana averages a daily high of 32.7°C with nights around 22.4°C. Rain is rare — about 1.5 wet days and 5mm across the month. Generally workable, with some weather to plan around.
December in Antsiranana averages a daily high of 32.9°C with nights around 23.1°C. Expect roughly 14.5 wet days totalling 207.7mm. Demanding conditions — pack for it and plan indoor options.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Antsiranana peaks at 86.
Based on 30 years of records, June–August scores highest for comfort in Antsiranana, balancing daytime temperature against rainfall.
December is the warmest, averaging a daily high of 32.9°C.
March is the wettest, averaging 256.2mm of rain across roughly 12 wet days.
July is the coolest month, with average daily highs around 29.8°C.