Weather in Semarang in July

A good month. July works. It is not the peak, but nothing about it fights you. Highs average 31.8 °C, lows 22.9 °C, and rain falls on 7 days — nothing in the month is working against you.

July is the highest-scoring month of the twelve. The nearest rival is June, and the month at the other end of the year is October.

Rain on 7 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 31.8 °C days and 22.9 °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: 26 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest July day reached 36 °C and the coldest night fell to 19.1 °C, and the wettest single day dropped 69 mm — roughly 138% of the month's rain in one day.

This is the volatile part. July rainfall has ranged from 1 mm to 153 mm across the twenty years measured — a 152 mm spread around an average of 50 mm. The average is real but almost no individual July looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 75%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 30.6 °C in June, 31.8 here, 33.9 in August. Nothing about the timing within the month matters much.

Daylight in July

Semarang sits close enough to the equator that daylight barely moves all year — 11.7 hours in July, 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 28.9 °C in July — warm enough that the water offers no relief from the heat. The sea peaks at 29.9 °C in May and bottoms out at 28.5 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

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

July in Semarang versus nearby

If Semarang is one option among several, the nearby comparison is worth making. Jepara is a better bet in July — 2.4 °C cooler, 1 day more rain. Surabaya is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: July is the answer for Semarang. If it is booked out or priced out, June is the next best thing at 4 points behind, and October is the month to keep off the shortlist.

Every month in Semarang

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