Weather in Istanbul in November

A good month. November works. It is not the peak, but nothing about it fights you. Highs average 15.2 °C, lows 10.1 °C, and rain falls on 9 days — nothing in the month is working against you.

November ranks 8 of 12 in Istanbul: past the worst of the year but short of May, which is the month to book if the dates are open.

Rain on 9 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 15.2 °C days and 10.1 °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 — 5.2 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest November day reached 23.3 °C and the coldest night fell to 0.4 °C, and the wettest single day dropped 48 mm — roughly 76% of the month's rain in one day.

November is moderately variable: 7 mm in the driest year against 150 mm in the wettest, around an average of 63 mm. Roughly two Novembers in three land near that average, and the third does something else entirely.

Wind is light at 14.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 80%, high enough to notice on the warm days without dominating them.

How November sits in the year

The month is on the way down: 5 °C cooler than October, with December dropping another 4.8 °C. The first week and the last are not the same trip.

Daylight in November

November sits at the dark end of Istanbul's year — 9.9 hours of daylight against 15.1 at midsummer, losing 1 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 15.1 °C in November — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. The sea peaks at 25.6 °C in August and bottoms out at 7.5 °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

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

November in Istanbul versus nearby

If Istanbul is one option among several, the nearby comparison is worth making. Bursa is a better bet in November — 2.4 °C warmer, 1 day less rain. Eskişehir is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: November is a compromise. May is 20 points better and is what Istanbul is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Istanbul

See all twelve months in Istanbul, or where else to go in November.