Avg high
17°C
Avg low
9°C
Rainfall
56 mm
Rain days
9.2
Sunshine
10.3 h/day
Daylight
13.1 h
What to pack for Istanbul in April
- long sleeves and a warm layer
- a medium jacket
- a compact umbrella or rain shell — rain is frequent
Humidity averages 76%; max daily wind around 21 km/h.
How April compares
Best months in Istanbul: May–October. See the full best time to visit Istanbul guide.
Istanbul in April: the details
In April, Istanbul sees average daytime highs of 17°C (62°F) and overnight lows of 9°C (48°F). Rainfall totals roughly 56 mm across 9.2 rainy days, and the sun shines about 10.3 hours per day with 13.1 hours of daylight mid-month. Relative humidity averages 76%.
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Istanbul, Turkey (41.01, 28.95) — see our methodology. Actual conditions vary year to year.
Where should you go next month?
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