Nusantara weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Good
Best time to visit: January – December
What is the weather like in Nusantara in January?
In January, Nusantara is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun is scarce, with only about 4 hours a day. It is the rainy season: rain falls on about 28 days, totalling 338 mm. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is a good month for a holiday in Nusantara.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 64 | 63 | 64 |
| Day | 30° | 30° | 30° |
| Night | 24° | 23° | 24° |
| Sea | 30° | 29° | 29° |
| Sun | 4 h | 4 h | 4 h |
| Rain days | 29 | 28 | 24 |
More details for January
- Daylight
- 12 h 10 min06:17 – 18:27
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 7 km/haverage daily peakAll months
- Cloud cover
- 94 %on averageAll months
- Hot days
- 12 days30 °C or moreAll months
- Time zone
- UTC+8Asia/Makassar
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %15 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Nusantara in January: quick answers
Is Nusantara hot in January?
Yes. In January, Nusantara is hot: daytime highs average 30 °C and nights stay around 23 °C. On about 12 days the thermometer climbs to 30 °C or more.
Can you swim in Nusantara in January?
Yes. In January the sea averages 29.2 °C – almost as warm as a bath.
Does it rain much in Nusantara in January?
It rains often – on about 28 days, adding up to 338 mm.
Nusantara month by month
The whole year in NusantaraAll destinations: IndonesiaWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences