Weather in Istanbul in April 2025
Average weather
Average temperature in Istanbul in April
Going from a maximum of +20°C during the day to a minimum of +7°C during the night, the temperature in April averages around +15°C.
The average maximum temperature goes down 8% by the end of the month, compared with the beginning of the month, from +17°C to +16°C.
Is Istanbul warm or cold in April?
Istanbul is typically mild in April.
Maximum temperatures go up compared to the previous month from +11°C to +15°C. The minimum temperature also goes up from +6°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how April is compared to other months in Istanbul:
Water temperature in Istanbul in April
Water in Istanbul in April is Cold. It varies from +8°C to +13°C, with an average of +10°C. This is almost similar to the air temperature, which averages +15°C.
In April, water temperatures are average relative to the rest of the year:
Can you swim in Istanbul in April?
Climate in Istanbul in April
| March | April | May | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +11°C | +15°C | +20°C | ||||
| Min. temperature | ||||||
| -4°C | +1°C | +6°C | ||||
| Max. temperature | ||||||
| +25°C | +28°C | +34°C | ||||
| Rainfall | ||||||
| 54 mm | 41 mm | 26 mm | ||||
| Wind | ||||||
| 4 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +8°C | +10°C | +16°C | ||||
| Humidity | ||||||
| 73% | 69% | 69% | ||||
| Air pressure | ||||||
| 1016 HPa | 1013 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 9 | 12 | 15 | ||||
| Cloudy days | ||||||
| 8 | 7 | 6 | ||||
| Rainy days | ||||||
| 12 | 10 | 8 | ||||
| Snowy days | ||||||
| 1 | 0 | 0 | ||||
April weather is still as good as in March. It’s getting warmer as April arrives. The average maximum temperature goes up from +11°C to +15°C during the day. As April arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 54 mm to 41 mm. It feels drier, as humidity decreases from 73% to 69%. Winds are calmer in comparison to March, going down from 4 m/s to 3 m/s on average. The good news is there are likely to be more sunny days in April, from 9 to 12.
May brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Istanbul is gradually decreasing during April, going from 4 m/s to 3 m/s over the course of the month.
Rain
How was the weather last April in Istanbul?
Climate Change over Years
The climate in Istanbul in April has not changed much over the last 43 years.
The average temperature was the lowest in 1997 (+16°C) and the highest in 2019 (+20°C). The driest year was 1984 with only 361 mm of rainfall, and the wettest year was 2010 with 859 mm.
FAQ
Is April a good time to visit Istanbul?
Can you sunbathe in Istanbul in April?
Can you swim in Istanbul in April?
Is Istanbul rainy in April?
Is it sunny in Istanbul in April?
Other cities in Turkey
Monthly weather in Istanbul
Source of the data
For this page, we’ve looked at the typical weather in Istanbul, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.