Semarang weather by month & the best time to visit
Indonesia · coastal city break · tropical monsoon climate
The best time to visit Semarang is July — its sunniest month (Sunshine Score 84/100), with August and June close behind. Semarang averages about 2,418 hours of sunshine a year. Daytime highs around 31°C / 88°F and roughly 50 mm of rain in July.
When is the best time to visit Semarang?
For sunshine, the best time to visit Semarang is July, then August and June. The dullest month is September (57/100, 67 mm of rain). The full month-by-month picture is in the table below.
How sunny is Semarang?
Semarang gets a moderate 2,418 hours of sunshine a year. July (84/100) is noticeably better than September (57). It ranks #37 of 119 destinations in Indonesia for annual sunshine, above the national median of 2,183 hours. Rain has a clear season: the wettest stretch, around January, carries about 47% of the annual 2,056 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 66 | 29° / 84°F | 25° / 77°F | 354 mm | 9 | 31° / 88°F |
| February | 66 | 29° / 84°F | 25° / 77°F | 349 mm | 10 | 31° / 88°F |
| March | 66 | 30° / 86°F | 25° / 77°F | 204 mm | 11 | 31° / 88°F |
| April | 66 | 30° / 86°F | 25° / 77°F | 187 mm | 10 | 32° / 90°F |
| May | 69 | 30° / 86°F | 24° / 75°F | 132 mm | 9 | 32° / 90°F |
| June | 77 | 30° / 86°F | 23° / 73°F | 87 mm | 9 | 31° / 88°F |
| July | 84 | 31° / 88°F | 23° / 73°F | 50 mm | 9 | 30° / 86°F |
| August | 79 | 33° / 91°F | 23° / 73°F | 30 mm | 10 | 30° / 86°F |
| September | 57 | 35° / 95°F | 24° / 75°F | 67 mm | 11 | 31° / 88°F |
| October | 57 | 34° / 93°F | 25° / 77°F | 118 mm | 11 | 31° / 88°F |
| November | 66 | 32° / 90°F | 25° / 77°F | 205 mm | 10 | 32° / 90°F |
| December | 66 | 30° / 86°F | 25° / 77°F | 273 mm | 9 | 31° / 88°F |
Sea temperature in Semarang by month
The sea off Semarang is warmest in April at around 32°C / 90°F, and coolest in July at 30°C / 86°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
How Semarang compares month by month: Semarang vs Surabaya · Semarang vs Bandung · Semarang vs Yogyakarta · Semarang vs Surakarta · all comparisons
Semarang: questions and answers
What kind of destination is Semarang?
Semarang is a coastal city break in Indonesia with a tropical monsoon climate — the sea reaches 32°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Semarang get a year?
Semarang gets about 2,418 hours of sunshine a year, at its best around July.
When is the best time to visit Semarang?
The sunniest time to visit Semarang is July, when the Sunshine Score peaks at 84/100 (with August and June close behind). Expect daytime highs around 31°C / 88°F.
What is the least sunny month in Semarang?
September is the least sunny month in Semarang, scoring 57/100 with about 67 mm of rain.
What is the sea temperature in Semarang?
The sea in Semarang ranges from about 30°C (July) to 32°C (April). Month-by-month sea temperatures are on this page.
How strong is the sun in Semarang?
The typical midday UV index in Semarang peaks around 11 (extreme) in March, easing to about 9 (very high) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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