Kotabumi in Summer
In summer (December, January and February), Kotabumi sees average daytime highs around 31°C and overnight lows near 24°C, with 778 mm of rain over about 81 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 1% of the time across summer, and the air most often feels oppressive.
Summer is Kotabumi's 3rd-best season to visit on our travel score. For the whole year in context, see Kotabumi's year-round climate.
- Avg daytime high
- 31°C
- coldest season of the year
- Avg overnight low
- 24°C
- Rainfall
- 778 mm
- 81 wet days
- Avg wind
- 7 km/h
- Travel score
- 2.5
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Kotabumi in Summer
Across summer, daytime highs hold fairly steady around 31°C.
A typical summer day in Kotabumi reaches about 31°C and drops to 24°C overnight. The warmest of the three months is February, the coolest January.
How summer really feels in Kotabumi
Once humidity and wind are folded in, summer brings about 90 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Kotabumi weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 24° | 253 | 27.7 | 12.2 | 2.6 |
| Feb | 31° / 24° | 229 | 24.8 | 12.2 | 2.6 |
| Mar | 32° / 24° | 281 | 28.7 | 12 | 2.3 |
| Apr | 32° / 24° | 238 | 27 | 11.9 | 2.4 |
| May | 32° / 24° | 163 | 24.3 | 11.8 | 2.7 |
| Jun | 31° / 24° | 106 | 19.8 | 11.7 | 3.2 |
| Jul | 31° / 23° | 95 | 16.9 | 11.7 | 3.6 |
| Aug | 32° / 23° | 71 | 13.4 | 11.8 | 3.5 |
| Sep | 33° / 24° | 65 | 11.5 | 12 | 3.1 |
| Oct | 33° / 24° | 133 | 17.2 | 12.1 | 2.7 |
| Nov | 32° / 24° | 230 | 25 | 12.2 | 2.4 |
| Dec | 31° / 24° | 296 | 28.8 | 12.3 | 2.4 |
Cloud cover in Summer
The sky is clear or mostly clear about 1% of the time across summer.
Chance of precipitation in Summer
Kotabumi gets around 778 mm of rain over 81 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 18 min in early December to 12 h 06 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.7 kWh/m².
Is summer a good time to visit Kotabumi?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Kotabumi.
What to pack for Kotabumi in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Kotabumi sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 81 days see rain.
UV index in Kotabumi in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Kotabumi peaks around February 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 17 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 15 | 15 | 13 | 11 | 10 | 9 | 10 | 12 | 13 | 9 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Very high |
| Jul | 9 | Very high |
| Aug | 10 | Extreme |
| Sep | 12 | Extreme |
| Oct | 13 | Extreme |
| Nov | 9 | Very high |
| Dec | 12 | Extreme |
Air quality in Kotabumi in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Kotabumi is worst in October — around 82 µg/m³ PM2.5 (unhealthy), about 2.7× the cleanest month (January, 30 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 30 | 31 | 36 | 39 | 39 | 43 | 47 | 51 | 71 | 82 | 54 | 37 |
| Level | Moderate | Moderate | Poor | Poor | Poor | Poor | Poor | Poor | Unhealthy | Unhealthy | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 30 | Moderate |
| Feb | 31 | Moderate |
| Mar | 36 | Poor |
| Apr | 39 | Poor |
| May | 39 | Poor |
| Jun | 43 | Poor |
| Jul | 47 | Poor |
| Aug | 51 | Poor |
| Sep | 71 | Unhealthy |
| Oct | 82 | Unhealthy |
| Nov | 54 | Poor |
| Dec | 37 | Poor |
Where is Kotabumi?
Kotabumi sits at 4.8°S, 104.9°E, 37 m above sea level, in Indonesia. The nearest listed city is Terbanggi Besar, 38 km away.
Topography around Kotabumi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kotabumi.
Within 3 km, the terrain around Kotabumi has only modest variations in elevation — a maximum elevation change of 32 m around an average of 34 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 109 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,072 m.
The land around Kotabumi is covered by trees (64%) and artificial surfaces (30%) within 3 km, trees (82%) within 16 km, and trees (82%) within 80 km.
Indonesia travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 29% of US
- price level, 2025
- GDP per capita
- $5,060
- 2025
- Happiness
- 5.6 / 10
- World Happiness, 2025
- Safe drinking water
- 30%
- of population, 2024
- Homicide rate
- 0.3
- per 100k, 2022
- Road deaths
- 11.3
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 471
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kotabumi (-4.8251°, 104.8817°, elevation 37 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.