Semarang climate
Semarang (Indonesia) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 28 °C82 °F, and about 2,057 mm81 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Semarang climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2985 | 2576 | 2781 | 35414 |
| Feb | 2984 | 2576 | 2780 | 34914 |
| Mar | 3085 | 2577 | 2781 | 2048.0 |
| Apr | 3086 | 2577 | 2781 | 1877.3 |
| May | 3086 | 2476 | 2781 | 1325.2 |
| Jun | 3087 | 2374 | 2780 | 873.4 |
| Jul | 3188 | 2272 | 2780 | 502.0 |
| Aug | 3392 | 2373 | 2882 | 301.2 |
| Sep | 3595 | 2474 | 2984 | 672.6 |
| Oct | 3493 | 2576 | 2985 | 1184.7 |
| Nov | 3289 | 2577 | 2883 | 2058.1 |
| Dec | 3086 | 2577 | 2781 | 27311 |
| Year | 3595 | 2272 | 2882 | 2,05781 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 86% | 92% | 4.4 | 12:29 |
| Feb | 87% | 91% | 4.6 | 12:20 |
| Mar | 85% | 85% | 5.1 | 12:09 |
| Apr | 85% | 80% | 5.1 | 11:57 |
| May | 84% | 67% | 5.0 | 11:48 |
| Jun | 81% | 58% | 4.9 | 11:43 |
| Jul | 75% | 51% | 5.2 | 11:45 |
| Aug | 66% | 45% | 5.8 | 11:53 |
| Sep | 62% | 48% | 6.2 | 12:05 |
| Oct | 67% | 66% | 6.0 | 12:16 |
| Nov | 77% | 84% | 5.3 | 12:27 |
| Dec | 83% | 94% | 4.4 | 12:32 |
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 Semarang is like
The warmest month is October, with an average high of 34 °C93 °F and a low of 25 °C76 °F. The coldest is February, when highs average 29 °C84 °F and lows 25 °C76 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.6 °C4.6 °F.
It is very wet, receiving about 2,057 mm81 in of precipitation per year. The wettest three-month stretch is December–February, which brings 47% of the annual total. The wettest month is January (354 mm14 in), the driest is August (30 mm1.2 in).
Relative humidity ranges from 62% in September to 87% in February. The clearest skies (lowest average cloud amount, 45%) are typical of August. Average wind speed near the ground ranges from 5 km/h (3 mph) in April to 8 km/h (5 mph) in September.
Best time to visit Semarang
Based on these averages, the most comfortable months for sightseeing and outdoor activities are July: average highs of 31 °C88 °F to 31 °C88 °F with 50 mm2.0 in to 50 mm2.0 in of precipitation per month.
The most challenging month is January, which is very wet (354 mm14 in) and humid (86% relative humidity).
Comfort score: months are ranked by how close they come to 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.
Semarang weather by month
- January29 °C85 °F / 25 °C76 °F
- February29 °C84 °F / 25 °C76 °F
- March30 °C85 °F / 25 °C77 °F
- April30 °C86 °F / 25 °C77 °F
- May30 °C86 °F / 24 °C76 °F
- June30 °C87 °F / 23 °C74 °F
- July31 °C88 °F / 22 °C72 °F
- August33 °C92 °F / 23 °C73 °F
- September35 °C95 °F / 24 °C74 °F
- October34 °C93 °F / 25 °C76 °F
- November32 °C89 °F / 25 °C77 °F
- December30 °C86 °F / 25 °C77 °F
What to pack for Semarang
- Wetter months (November–April) — highs 2984 to 32 °C89 °F, lows around 25 °C76 °F, about 262 mm10 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 (May–October) — highs 3086 to 35 °C95 °F, lows 2272 to 25 °C76 °F, about 81 mm3.2 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Semarang compares
Compared with Surabaya, about 259 km to the east, Semarang is on average 0.5 °C0.9 °F cooler and receives 9% more precipitation (2,057 mm81 in vs 1,881 mm74 in). The difference is largest in June (0.9 °C1.7 °F cooler).
Of the 110 places in Indonesia covered by World Climates, Semarang is the 26th warmest by annual mean temperature and the 76th wettest by annual precipitation. See all of them on the Indonesia climate page.
Places in other countries with the most similar temperature and rainfall pattern: Itaituba (Brazil, Am), Manacapuru (Brazil, Am) and Manaus (Brazil, Am).
Nearby places
- Ungaran 16 km · 25 °C78 °F · 2,057 mm81 in
- Jepara 52 km · 28 °C82 °F · 2,137 mm84 in
- Magelang 58 km · 25 °C76 °F · 2,330 mm92 in
- Pati 73 km · 28 °C82 °F · 1,975 mm78 in
- Surakarta 77 km · 27 °C80 °F · 2,096 mm83 in
- Pekalongan 83 km · 27 °C81 °F · 2,170 mm85 in
- Yogyakarta 90 km · 26 °C79 °F · 2,162 mm85 in
- Purwokerto 139 km · 26 °C79 °F · 2,608 mm103 in
Frequently asked questions
What is the warmest month in Semarang?
October is the warmest month in Semarang, with an average high of 34 °C (93 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Semarang?
February is the coldest month, with an average high of 29 °C (84 °F) and an average low of 25 °C (76 °F).
When does it rain the most in Semarang?
January is the wettest month with about 354 mm (13.9 in) of precipitation; August is the driest with about 30 mm (1.2 in).
What is the best time to visit Semarang?
Judging by long-term averages, the most comfortable months are July.
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 — most of all 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 138 m, while Semarang lies at about 18 m. Temperatures on this page were therefore adjusted by +0.8 °C1.4 °F using the standard lapse rate of 6.5 °C per 1,000 m.