Weather in Semarang in June

Shoulder season. June sits in between. You will get good days and you will lose some. Highs average 30.6 °C, lows 23.6 °C, and rain falls on 11 days — nothing in the month is working against you.

June ranks 2 of 12 in Semarang. Only July scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 11 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 30.6 °C days and 23.6 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 21 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest June day reached 33.9 °C and the coldest night fell to 20 °C, and the wettest single day dropped 48 mm — roughly 55% of the month's rain in one day.

This is the volatile part. June rainfall has ranged from 1 mm to 264 mm across the twenty years measured — a 263 mm spread around an average of 87 mm. The average is real but almost no individual June looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 81%, high enough to notice on the warm days without dominating them.

How June sits in the year

Temperatures hold steady either side: 30.4 °C in May, 30.6 here, 31.8 in July. Nothing about the timing within the month matters much. Rain has already shifted: 6 days fewer than May had.

Daylight in June

Semarang sits close enough to the equator that daylight barely moves all year — 11.7 hours in June, against a range of just 0.8 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 29.6 °C in June — warm enough that the water offers no relief from the heat. This is the warmest the water gets all year.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

June in Semarang versus nearby

If Semarang is one option among several, the nearby comparison is worth making. Jepara is close enough to be a coin toss — within a degree on temperature, 3 days more rain. Surabaya is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: June is effectively as good as it gets here — 4 points behind July, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Semarang

See all twelve months in Semarang, or where else to go in June.