Riau weather in January
January is a fair month to visit Riau: highs of 28°C (83°F) and about 236 mm (9.3 in) of rain on average. Nights average 25°C (78°F) and cloud cover 79% (NASA POWER, 2001–2025 averages). The sea averages 28°C (83°F). It is the 3rd wettest month of the year and the coolest. Compared with December, it is about as warm and drier; February brings highs of 29°C (84°F) and 108 mm (4.3 in) of rain.
Figures are long-term averages for Batam, the largest city in Riau. See below for other places.
Is January a good time to visit Riau?
fair month Weather score 45/100.
January is a fair month in Riau. The weather is usually best in Feb, Jun, Aug.
Does it rain a lot in Riau in January?
Yes, it is one of the rainy months: about 236 mm (9.3 in) falls in an average January. It is the 3rd wettest month of the year.
How warm is Riau in January?
Days average 28°C (83°F) and nights 25°C (78°F).
Riau weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 28°C (83°F) | 25°C (78°F) | 236 mm | 79% | 28°C (83°F) | fair |
| February | 29°C (84°F) | 25°C (78°F) | 108 mm | 72% | 29°C (83°F) | best |
| March | 29°C (85°F) | 26°C (79°F) | 177 mm | 69% | 29°C (85°F) | fair |
| April | 30°C (85°F) | 27°C (81°F) | 203 mm | 71% | 31°C (87°F) | fair |
| May | 30°C (86°F) | 28°C (82°F) | 202 mm | 72% | 31°C (88°F) | fair |
| June | 29°C (85°F) | 28°C (82°F) | 164 mm | 74% | 31°C (88°F) | best |
| July | 29°C (84°F) | 27°C (81°F) | 168 mm | 75% | 30°C (87°F) | fair |
| August | 29°C (84°F) | 27°C (80°F) | 166 mm | 74% | 30°C (86°F) | best |
| September | 29°C (84°F) | 27°C (80°F) | 165 mm | 79% | 30°C (86°F) | fair |
| October | 29°C (84°F) | 27°C (80°F) | 206 mm | 82% | 30°C (86°F) | fair |
| November | 29°C (83°F) | 27°C (80°F) | 294 mm | 85% | 31°C (87°F) | least pleasant |
| December | 28°C (83°F) | 26°C (79°F) | 302 mm | 88% | 29°C (85°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months
Weather across Riau in January
Weather can differ a lot within Riau: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Batam | 28°C (83°F) | 25°C (78°F) | 236 mm | fair |
| Pekanbaru | 28°C (83°F) | 23°C (73°F) | 224 mm | fair |
| Dumai | 28°C (83°F) | 23°C (73°F) | 190 mm | fair |
| Balai Pungut | 28°C (83°F) | 23°C (73°F) | 211 mm | fair |