| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 30.4° | 24.6° | 191.6mm | 5 | 76 |
| February | 30.9° | 24.8° | — | — | 78 |
| March | 31.5° | 25° | — | — | 76 |
| April | 32° | 24.6° | — | — | 74 |
| May | 32.1° | 24.8° | — | — | 74 |
| June | 31.5° | 25° | — | — | 76 |
| July | 31.5° | 24.7° | — | — | 76 |
| August | 31.5° | 24.6° | — | — | 76 |
| September | 31.5° | 24° | — | — | 76 |
| October | 31.6° | 23.9° | — | — | 76 |
| November | 30.9° | 23.8° | — | — | 78 |
| December | 30.6° | 22.9° | — | — | 80 |
January in Batam averages a daily high of 30.4°C with nights around 24.6°C. Expect roughly 5 wet days totalling 191.6mm. Comfortable conditions for being outdoors all day.
February in Batam averages a daily high of 30.9°C with nights around 24.8°C. Comfortable conditions for being outdoors all day.
March in Batam averages a daily high of 31.5°C with nights around 25°C. Comfortable conditions for being outdoors all day.
April in Batam averages a daily high of 32°C with nights around 24.6°C. Generally workable, with some weather to plan around.
May in Batam averages a daily high of 32.1°C with nights around 24.8°C. Generally workable, with some weather to plan around.
June in Batam averages a daily high of 31.5°C with nights around 25°C. Comfortable conditions for being outdoors all day.
July in Batam averages a daily high of 31.5°C with nights around 24.7°C. Comfortable conditions for being outdoors all day.
August in Batam averages a daily high of 31.5°C with nights around 24.6°C. Comfortable conditions for being outdoors all day.
September in Batam averages a daily high of 31.5°C with nights around 24°C. Comfortable conditions for being outdoors all day.
October in Batam averages a daily high of 31.6°C with nights around 23.9°C. Comfortable conditions for being outdoors all day.
November in Batam averages a daily high of 30.9°C with nights around 23.8°C. Comfortable conditions for being outdoors all day.
December in Batam averages a daily high of 30.6°C with nights around 22.9°C. Comfortable conditions for being outdoors all day.
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. Batam peaks at 80.
Based on 30 years of records, Any time of year scores highest for comfort in Batam, balancing daytime temperature against rainfall.
May is the warmest, averaging a daily high of 32.1°C.
January is the wettest, averaging 191.6mm of rain across roughly 5 wet days.
January is the coolest month, with average daily highs around 30.4°C.