Subulussalam climate
Subulussalam (Indonesia) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 27 °C80 °F, and about 3,173 mm125 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Subulussalam climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2985 | 2475 | 2780 | 2289.0 |
| Feb | 3085 | 2475 | 2780 | 1817.1 |
| Mar | 3085 | 2476 | 2781 | 2489.8 |
| Apr | 2985 | 2576 | 2781 | 2389.4 |
| May | 3085 | 2577 | 2781 | 2409.5 |
| Jun | 2984 | 2476 | 2780 | 1807.1 |
| Jul | 2984 | 2475 | 2680 | 2278.9 |
| Aug | 2984 | 2475 | 2679 | 26010 |
| Sep | 2984 | 2475 | 2679 | 31112 |
| Oct | 2984 | 2475 | 2679 | 38015 |
| Nov | 2983 | 2475 | 2679 | 36414 |
| Dec | 2984 | 2475 | 2679 | 31512 |
| Year | 3085 | 2475 | 2780 | 3,173125 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 88% | 84% | 5.2 | 11:59 |
| Feb | 87% | 80% | 5.7 | 12:02 |
| Mar | 88% | 82% | 5.7 | 12:06 |
| Apr | 89% | 87% | 5.4 | 12:10 |
| May | 88% | 85% | 5.3 | 12:14 |
| Jun | 88% | 83% | 5.1 | 12:16 |
| Jul | 88% | 86% | 5.0 | 12:16 |
| Aug | 88% | 89% | 5.0 | 12:12 |
| Sep | 89% | 92% | 5.0 | 12:08 |
| Oct | 89% | 93% | 4.9 | 12:03 |
| Nov | 90% | 93% | 4.7 | 11:00 |
| Dec | 89% | 89% | 4.9 | 11:58 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Subulussalam is like
The warmest month is May, with an average high of 30 °C85 °F and a low of 25 °C77 °F. The coldest is September, when highs average 29 °C84 °F and lows 24 °C75 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 0.9 °C1.6 °F.
It is very wet, receiving about 3,173 mm125 in of precipitation per year. The wettest three-month stretch is October–December, which brings 33% of the annual total. The wettest month is October (380 mm15 in), the driest is June (180 mm7.1 in).
Relative humidity ranges from 87% in February to 90% in November. The clearest skies (lowest average cloud amount, 80%) are typical of February. Average wind speed near the ground ranges from 3 km/h (2 mph) in June to 3 km/h (2 mph) in October.
Best time to visit Subulussalam
No month comes close to our comfort ideal here. The least demanding months are February, June and July (average highs 30 °C85 °F, 29 °C84 °F and 29 °C84 °F).
The most challenging month is October, which is very wet (380 mm15 in) and humid (89% relative humidity).
Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Subulussalam
- Wetter months (September–December) — highs around 29 °C83 °F, lows around 24 °C75 °F, about 343 mm13 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (January–August) — highs 2984 to 30 °C85 °F, lows 2475 to 25 °C77 °F, about 225 mm8.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
How Subulussalam compares
The nearest larger place is Medan, about 134 km to the northeast. Compared with it, Subulussalam has practically the same average temperature. It receives 39% more precipitation (3,173 mm125 in vs 2,276 mm90 in). The difference is largest in January (0.5 °C1 °F warmer).
World Climates covers 110 places in Indonesia. By annual mean temperature, Subulussalam is the 74th warmest of them. By annual precipitation, it is the 9th wettest. See all of them on the Indonesia climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Kuala Lumpur (Malaysia, Af), Kajang (Malaysia, Af) and Selayang Baru Utara (Malaysia, Af).
Nearby places
- Climate in Medan 134 km · 27 °C80 °F · 2,276 mm90 in
- Climate in Pematangsiantar 136 km · 24 °C76 °F · 2,724 mm107 in
- Climate in Belawan 152 km · 28 °C82 °F · 2,477 mm98 in
- Climate in Gunungsitoli 156 km · 28 °C82 °F · 2,936 mm116 in
- Climate in Tebingtinggi 160 km · 28 °C82 °F · 2,334 mm92 in
- Climate in Langsa 201 km · 28 °C82 °F · 2,347 mm92 in
- Climate in Padangsidempuan 210 km · 25 °C77 °F · 4,346 mm171 in
- Climate in Tanjungbalai 216 km · 27 °C81 °F · 2,627 mm103 in
Frequently asked questions
What is the warmest month in Subulussalam?
May is the warmest month in Subulussalam. Its average high is 30 °C (85 °F) and its average low is 25 °C (77 °F).
What is the coldest month in Subulussalam?
September is the coldest month. Its average high is 29 °C (84 °F) and its average low is 24 °C (75 °F).
When does it rain the most in Subulussalam?
October is the wettest month with about 380 mm (15.0 in) of precipitation. June is the driest with about 180 mm (7.1 in).
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 468 m, while Subulussalam lies at about 29 m. Temperatures on this page were therefore adjusted by +2.9 °C5.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.