Weather in Medan in June

A hard month. June is a hard month in Medan, and worth planning around. You should expect rain on 20 days of the month, which is more days wet than dry.

Medan barely has seasons. June scores 47 out of 100 against a best of 54 in February — a gap small enough that the month you choose matters far less here than the week you choose.

Rain on 20 of the month's 30 days, 4 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Natural fibres and a second shirt for the day. At 83% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: 20 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest June day reached 33.3 °C and the coldest night fell to 20.7 °C, and the wettest single day dropped 47 mm — roughly 34% of the month's rain in one day.

June is moderately variable: 47 mm in the driest year against 317 mm in the wettest, around an average of 137 mm. Roughly two Junes in three land near that average, and the third does something else entirely.

Wind is light at 3.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 83%, high enough to notice on the warm days without dominating them.

How June sits in the year

Temperatures hold steady either side: 30.7 °C in May, 30.4 here, 30.2 in July. Nothing about the timing within the month matters much. Rain has already shifted: 5 days fewer than May had.

Daylight in June

Medan sits close enough to the equator that daylight barely moves all year — 12.3 hours in June, against a range of just 0.4 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 30.4 °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

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

June in Medan versus nearby

If Medan is one option among several, the nearby comparison is worth making. Ipoh is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Kota Kuala Muda is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: June works, with February the better month by 7 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Medan

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