Weather in Malmö in September

A good month. September works. It is not the peak, but nothing about it fights you. Highs average 17.3 °C, lows 12.3 °C, and rain falls on 11 days — nothing in the month is working against you.

September ranks 4 of 12 in Malmö: past the worst of the year but short of July, which is the month to book if the dates are open.

Rain on 11 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 17.3 °C days and 12.3 °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: the day barely swings — 4.9 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest September day reached 23.6 °C and the coldest night fell to 5.8 °C, and the wettest single day dropped 26 mm — roughly 48% of the month's rain in one day.

September is moderately variable: 16 mm in the driest year against 123 mm in the wettest, around an average of 54 mm. Roughly two Septembers in three land near that average, and the third does something else entirely.

Wind is light at 15.8 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 September sits in the year

The month is on the way down: 3.4 °C cooler than August, with October dropping another 5.1 °C. The first week and the last are not the same trip.

Daylight in September

12.9 hours of daylight, losing 2.3 hours across the month. That is between Malmö's extremes of 17.5 and 7.1 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 21.3 °C between the year's warmest afternoons and coldest nights.

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.

September in Malmö versus nearby

If Malmö is one option among several, the nearby comparison is worth making. Århus is close enough to be a coin toss — within a degree on temperature, 2 days more rain. Gothenburg is the weaker option in September — within a degree on temperature, 4 days more rain.

So: September 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 Malmö

See all twelve months in Malmö, or where else to go in September.