Semarang is rarely comfortable to be outside at midday. It comes closest in late January, and even then it is too hot. Sunbathing weather is not what it offers.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
Semarang never quite rates Good for sun. It comes closest in late July, at 54, mostly because it is too hot. Avoid mid April to early May for this: it falls to 13, mostly because it is too hot. The clearest skies come in August, when the sky is typically 40% covered at midday (partly cloudy).
Being outside is not what Semarang is for: the Easy outdoors rating tops out at 2, mostly because it is too hot.
Walking is not what Semarang is for: the Active outdoors rating tops out at 1, mostly because it is too warm.
The year, measured
The average temperature in Semarang over the whole year is 28°C. September is the hottest month, with highs of about 33°C; July is the coldest, with lows of about 25°C. Semarang has no sharply defined rainy season: the chance of rain on a given day runs from 46% in July, the driest month, to 68% in October, the wettest. Winds in Semarang are highest in August, averaging 2.6 m/s (9 km/h), and lightest in April, at 2.0 m/s (7 km/h). The prevailing wind is from the N. The clearest skies in Semarang come in August, when the sky is typically 48% covered; February is the cloudiest month, at 72%.
Month by month Semarang climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 31°C | 26°C | 34°C | 59% | 71% | 2.3 m/s | 1 | 37 | 0 |
| February | 30°C | 26°C | 33°C | 60% | 72% | 2.3 m/s | 1 | 42 | 0 |
| March | 31°C | 26°C | 35°C | 53% | 67% | 2.1 m/s | 0 | 30 | 0 |
| April | 32°C | 26°C | 35°C | 59% | 63% | 2.0 m/s | 0 | 18 | 0 |
| May | 33°C | 26°C | 35°C | 63% | 57% | 2.3 m/s | 0 | 19 | 0 |
| June | 32°C | 26°C | 34°C | 54% | 54% | 2.3 m/s | 0 | 33 | 0 |
| July | 32°C | 25°C | 33°C | 46% | 48% | 2.5 m/s | 1 | 49 | 1 |
| August | 33°C | 25°C | 34°C | 63% | 48% | 2.6 m/s | 1 | 49 | 0 |
| September | 33°C | 26°C | 34°C | 64% | 51% | 2.4 m/s | 0 | 35 | 0 |
| October | 33°C | 26°C | 35°C | 68% | 57% | 2.2 m/s | 0 | 21 | 0 |
| November | 32°C | 27°C | 35°C | 62% | 66% | 2.0 m/s | 0 | 17 | 0 |
| December | 31°C | 26°C | 35°C | 61% | 68% | 2.1 m/s | 0 | 28 | 0 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Semarang weather by season
Year round, Semarang has days of about 30°C at their warmest in February, its coolest month, and 33°C in September, its warmest; the coolest hours of the day run from 25°C to 27°C through the year, and the average temperature over the year is 28°C around the clock. Rain is most likely around October and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Semarang weather in winterJune to August
Winter in Semarang has typical daily highs of about 32°C and lows of about 25°C, with a 54% chance of rain on a given day.
Semarang weather in springSeptember to November
Spring in Semarang has typical daily highs of about 33°C and lows of about 26°C, with a 65% chance of rain on a given day.
Semarang weather in summerDecember to February
Summer in Semarang has typical daily highs of about 31°C and lows of about 26°C, with a 60% chance of rain on a given day.
Semarang weather in autumnMarch to May
Autumn in Semarang has typical daily highs of about 32°C and lows of about 26°C, with a 58% chance of rain on a given day.
When is the rainy season in Semarang?
Semarang has no sharply defined rainy season: the chance of rain on a given day runs from 46% in July, the driest month, to 68% in October, the wettest.
What time of year is Semarang windiest?
Winds in Semarang are highest in August, averaging 2.6 m/s (9 km/h), and lightest in April, at 2.0 m/s (7 km/h). The prevailing wind is from the N.
What is the average temperature in Semarang year round?
The average temperature in Semarang over the whole year is 28°C. September is the hottest month, with highs of about 33°C; July is the coldest, with lows of about 25°C.
Where to go instead in mid March, the weakest time here for being outside
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.