Indonesia weather in January
In January, popular resorts in Indonesia (Surabaya, Semarang, Makassar, Batam, Jepara) average 28°C by day and 25°C at night, and the sea is about 28°C. On average 301 mm of rain falls during the month.
That is the same as in December, and in February days average 28°C.
It is hot: ideal beach and swimming weather. The sea is warm and pleasant for swimming.
Warmest resorts in Indonesia in January
| Place | Day | Night | Sea | Rain |
|---|---|---|---|---|
| Sorong | 29°C | 26°C | 29°C | 165 mm |
| Surabaya | 29°C | 26°C | 29°C | 336 mm |
| Situbondo | 29°C | 26°C | 28°C | 294 mm |
| Cilacap | 29°C | 23°C | 29°C | 313 mm |
| Tarakan | 29°C | 25°C | 28°C | 243 mm |
| Pasuruan | 29°C | 25°C | 28°C | 315 mm |
| Semarang | 29°C | 24°C | 28°C | 354 mm |
| Cilegon | 29°C | 25°C | 28°C | 320 mm |
| Kendari | 29°C | 25°C | 27°C | 192 mm |
| Pontianak | 28°C | 23°C | 28°C | 320 mm |
| Ternate | 28°C | 26°C | 28°C | 206 mm |
| Kupang | 28°C | 25°C | 29°C | 313 mm |
Indonesia weather in other months
See also
FAQ
Is it warm in Indonesia in January?
In January, popular resorts in Indonesia (Surabaya, Semarang, Makassar, Batam, Jepara) average 28°C by day and 25°C at night, and the sea is about 28°C. On average 301 mm of rain falls during the month. It is hot: ideal beach and swimming weather.
What is the sea temperature in Indonesia in January?
About 28°C on average. The warmest water is in Kupang (29°C).
Where is it warmest in Indonesia in January?
The warmest place is Sorong (29°C by day), followed by Surabaya (29°C) and Situbondo (29°C).
Does it rain in Indonesia in January?
On average 301 mm of rain falls in the month. It is a fairly wet month, so pack a jacket.
Long-term averages from NASA POWER data (MERRA-2, 2001-2020 reanalysis, CC BY 4.0). Sea temperature is the average water surface temperature at the nearest grid point over the sea. This is climate, not a forecast for a specific day.