| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 31.1° | 24.8° | — | — | 78 |
| February | 30.7° | 25° | — | — | 79 |
| March | 31.4° | 25.2° | — | — | 76 |
| April | 32.6° | 25.3° | — | — | 72 |
| May | 33.1° | 25.1° | — | — | 70 |
| June | 32.9° | 24.6° | — | — | 70 |
| July | 33.2° | 23.9° | 20.9mm | 2 | 71 |
| August | 33.6° | 23.8° | — | — | 68 |
| September | 34.2° | 24.4° | — | — | 65 |
| October | 33.9° | 25.4° | — | — | 66 |
| November | 33.1° | 25.3° | — | — | 70 |
| December | 31.7° | 25.1° | — | — | 75 |
January in Semarang averages a daily high of 31.1°C with nights around 24.8°C. Comfortable conditions for being outdoors all day.
February in Semarang averages a daily high of 30.7°C with nights around 25°C. Comfortable conditions for being outdoors all day.
March in Semarang averages a daily high of 31.4°C with nights around 25.2°C. Comfortable conditions for being outdoors all day.
April in Semarang averages a daily high of 32.6°C with nights around 25.3°C. Generally workable, with some weather to plan around.
May in Semarang averages a daily high of 33.1°C with nights around 25.1°C. Generally workable, with some weather to plan around.
June in Semarang averages a daily high of 32.9°C with nights around 24.6°C. Generally workable, with some weather to plan around.
July in Semarang averages a daily high of 33.2°C with nights around 23.9°C. Rain is rare — about 2 wet days and 20.9mm across the month. Generally workable, with some weather to plan around.
August in Semarang averages a daily high of 33.6°C with nights around 23.8°C. Generally workable, with some weather to plan around.
September in Semarang averages a daily high of 34.2°C with nights around 24.4°C. Generally workable, with some weather to plan around.
October in Semarang averages a daily high of 33.9°C with nights around 25.4°C. Generally workable, with some weather to plan around.
November in Semarang averages a daily high of 33.1°C with nights around 25.3°C. Generally workable, with some weather to plan around.
December in Semarang averages a daily high of 31.7°C with nights around 25.1°C. Comfortable conditions for being outdoors all day.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Semarang peaks at 79.
Based on 30 years of records, December–April scores highest for comfort in Semarang, balancing daytime temperature against rainfall.
September is the warmest, averaging a daily high of 34.2°C.
July is the wettest, averaging 20.9mm of rain across roughly 2 wet days.
February is the coolest month, with average daily highs around 30.7°C.