Subulussalam in Winter
In winter (December, January and February), Subulussalam sees average daytime highs around 29°C and overnight lows near 20°C, with 1011 mm of rain over about 78 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Across winter, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 3% of the time across winter, and the air most often feels oppressive.
Winter is Subulussalam's 3rd-best season to visit on our travel score. Subulussalam has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Subulussalam's year-round climate.
- Avg daytime high
- 29°C
- 3rd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 1011 mm
- 78 wet days
- Avg wind
- 3 km/h
- Travel score
- 3.0
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Subulussalam in Winter
Across winter, daytime highs hold fairly steady around 29°C.
A typical winter day in Subulussalam reaches about 29°C and drops to 20°C overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Subulussalam
Once humidity and wind are folded in, winter brings about 71 days that feel above 32°C and 0 that feel at or below 0°C.
The story in winter is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Subulussalam weather by month
How the three winter 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 | 30° / 20° | 327 | 26.3 | 11.9 | 3.1 |
| Feb | 30° / 20° | 289 | 23.9 | 11.9 | 2.9 |
| Mar | 30° / 21° | 339 | 28.2 | 12 | 2.8 |
| Apr | 30° / 21° | 368 | 27.3 | 12.1 | 2.8 |
| May | 30° / 21° | 264 | 21.4 | 12.1 | 3.4 |
| Jun | 30° / 21° | 150 | 16.7 | 12.2 | 3.9 |
| Jul | 30° / 20° | 160 | 17.7 | 12.1 | 4.0 |
| Aug | 29° / 20° | 238 | 20.7 | 12.1 | 3.8 |
| Sep | 29° / 21° | 295 | 22.5 | 12 | 3.6 |
| Oct | 29° / 21° | 419 | 26 | 11.9 | 3.4 |
| Nov | 28° / 21° | 510 | 28.2 | 11.9 | 3.1 |
| Dec | 29° / 21° | 395 | 27.5 | 11.8 | 3.1 |
Cloud cover in Winter
The sky is clear or mostly clear about 3% of the time across winter.
Chance of precipitation in Winter
Subulussalam gets around 1011 mm of rain over 78 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 3 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 54 min in early December to 11 h 54 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 4.7 kWh/m².
Hazard calendar for Subulussalam
In winter, Subulussalam overlaps its cyclone season. The full year is below, with each hazard's peak months called out.
Subulussalam sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Is winter a good time to visit Subulussalam?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Subulussalam.
What to pack for Subulussalam in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Subulussalam sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 78 days see rain.
Sea temperature near Subulussalam in Winter
The nearest coast averages about 29°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 km away) is warmest in May at about 30°C and coldest in November near 29°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 30 | Tropical |
| Mar | 30 | Tropical |
| Apr | 30 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in Subulussalam in Winter
Clear-sky midday UV across winter averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Subulussalam peaks around March 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 11 (extreme).
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 | 14 | 15 | 13 | 12 | 11 | 11 | 12 | 14 | 13 | 11 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 14 | Extreme |
| Oct | 13 | Extreme |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Air quality in Subulussalam in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Subulussalam is worst in March — around 25 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 21 | 24 | 25 | 23 | 21 | 21 | 20 | 20 | 24 | 23 | 19 | 18 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 21 | Moderate |
| Feb | 24 | Moderate |
| Mar | 25 | Moderate |
| Apr | 23 | Moderate |
| May | 21 | Moderate |
| Jun | 21 | Moderate |
| Jul | 20 | Moderate |
| Aug | 20 | Moderate |
| Sep | 24 | Moderate |
| Oct | 23 | Moderate |
| Nov | 19 | Moderate |
| Dec | 18 | Moderate |
Where is Subulussalam?
Subulussalam sits at 2.7°N, 97.9°E, 29 m above sea level, in Indonesia. The nearest listed city is Singkil, 43 km away.
Topography around Subulussalam
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Subulussalam.
Within 3 km, the terrain around Subulussalam has only modest variations in elevation — a maximum elevation change of 40 m around an average of 21 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 205 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,429 m.
The land around Subulussalam is covered by trees (90%) within 3 km, trees (92%) within 16 km, and trees (63%) and water (33%) 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 Subulussalam (2.662°, 97.8827°, elevation 29 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.