Batam climate
Batam (Indonesia) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 28 °C82 °F, and about 2,391 mm94 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Batam climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2882 | 2577 | 2780 | 2369.3 |
| Feb | 2883 | 2577 | 2780 | 1094.3 |
| Mar | 2984 | 2679 | 2882 | 1777.0 |
| Apr | 2985 | 2781 | 2883 | 2038.0 |
| May | 3085 | 2882 | 2983 | 2028.0 |
| Jun | 2984 | 2781 | 2883 | 1646.5 |
| Jul | 2984 | 2780 | 2882 | 1686.6 |
| Aug | 2984 | 2780 | 2882 | 1656.5 |
| Sep | 2984 | 2780 | 2882 | 1656.5 |
| Oct | 2984 | 2780 | 2882 | 2068.1 |
| Nov | 2883 | 2680 | 2781 | 29412 |
| Dec | 2882 | 2678 | 2780 | 30212 |
| Year | 3085 | 2577 | 2882 | 2,39194 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 85% | 79% | 4.7 | 12:04 |
| Feb | 83% | 72% | 5.4 | 12:05 |
| Mar | 81% | 69% | 5.5 | 12:06 |
| Apr | 79% | 71% | 5.4 | 12:08 |
| May | 80% | 72% | 5.0 | 12:10 |
| Jun | 80% | 74% | 4.6 | 12:11 |
| Jul | 81% | 75% | 4.6 | 12:11 |
| Aug | 81% | 74% | 4.8 | 12:09 |
| Sep | 80% | 79% | 4.7 | 12:07 |
| Oct | 79% | 82% | 4.7 | 12:05 |
| Nov | 82% | 85% | 4.3 | 12:04 |
| Dec | 85% | 88% | 4.2 | 12:03 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Batam is like
The warmest month is May, with an average high of 30 °C85 °F and a low of 28 °C82 °F. The coldest is January, when highs average 28 °C82 °F and lows 25 °C77 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.1 °C3.7 °F.
It is very wet, receiving about 2,391 mm94 in of precipitation per year. The wettest three-month stretch is November–January, which brings 35% of the annual total. The wettest month is December (302 mm12 in), the driest is February (109 mm4.3 in).
Relative humidity ranges from 79% in October to 85% in January. The clearest skies (lowest average cloud amount, 69%) are typical of March. Average wind speed near the ground ranges from 8 km/h (5 mph) in April to 14 km/h (9 mph) in January.
Best time to visit Batam
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February. Average highs then reach 28 °C83 °F to 28 °C83 °F. Precipitation is 109 mm4.3 in to 109 mm4.3 in per month.
The most challenging month is December, which is very wet (302 mm12 in) and humid (85% relative humidity).
Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Batam
- Wetter months (October–January, April and May) — highs 2882 to 30 °C85 °F, lows 2577 to 28 °C82 °F, about 241 mm9.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (February and March, June–September) — highs 2883 to 29 °C84 °F, lows 2577 to 27 °C81 °F, about 158 mm6.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Batam compares
The nearest larger place is Singapore, about 25 km to the northwest. Compared with it, Batam is on average 0.5 °C1 °F warmer. It receives a similar amount of precipitation. The difference is largest in August (0.6 °C1.1 °F warmer).
World Climates covers 110 places in Indonesia. By annual mean temperature, Batam is the 28th warmest of them. By annual precipitation, it is the 44th wettest. See all of them on the Indonesia climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Malacca (Malaysia, Af), Singapore (Singapore, Af) and Seremban (Malaysia, Af).
Nearby places
- Climate in Singapore 25 km · 27 °C81 °F · 2,368 mm93 in
- Climate in Tanjung Pinang 55 km · 28 °C82 °F · 2,469 mm97 in
- Climate in Kluang 126 km · 27 °C80 °F · 2,300 mm91 in
- Climate in Batu Pahat 145 km · 27 °C80 °F · 2,300 mm91 in
- Climate in Malacca 230 km · 28 °C82 °F · 2,236 mm88 in
- Climate in Seremban 291 km · 27 °C81 °F · 2,406 mm95 in
- Climate in Dumai 293 km · 26 °C79 °F · 2,592 mm102 in
- Climate in Pekanbaru 296 km · 26 °C79 °F · 2,860 mm113 in
Frequently asked questions
What is the warmest month in Batam?
May is the warmest month in Batam. Its average high is 30 °C (85 °F) and its average low is 28 °C (82 °F).
What is the coldest month in Batam?
January is the coldest month. Its average high is 28 °C (82 °F) and its average low is 25 °C (77 °F).
When does it rain the most in Batam?
December is the wettest month with about 302 mm (11.9 in) of precipitation. February is the driest with about 109 mm (4.3 in).
What is the best time to visit Batam?
Judging by long-term averages, the most comfortable months are February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.