Measurements:
°C
°F
CURRENT WEATHER
20:58
Istanbul
58°F
N 2 mph
Feels like: 58°F
Precip: 0%
World Resorts Turkey Istanbul Weather

7 Day Weather Forecast

04.20
mon
DAY
58°F
N 6 mph
precip
0%
NIGHT
56°F
NE 3 mph
precip
0%
04.21
tue
DAY
64°F
NE 3 mph
precip
0%
NIGHT
52°F
SW 19 mph
precip
62%
04.22
wed
DAY
52°F
SW 11 mph
precip
100%
NIGHT
46°F
SW 11 mph
precip
0%
04.23
thu
DAY
54°F
SW 4 mph
precip
0%
NIGHT
52°F
NE 4 mph
precip
0%
04.24
fri
DAY
58°F
NE 11 mph
precip
100%
NIGHT
52°F
SW 9 mph
precip
0%
04.25
sat
DAY
50°F
S 15 mph
precip
100%
NIGHT
46°F
SW 5 mph
precip
0%
04.26
sun
DAY
56°F
N 2 mph
precip
0%
NIGHT
52°F
SW 2 mph
precip
0%

Istanbul Sea Water Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Istanbul was 10.1°F. The maximum and minimum values were 9.4°F and 10.8°F respectively.

Istanbul on the Weather Map

Best Time to Visit Istanbul
The most sunny months:
July 28 days
August 28 days
June 22 days
The most warm months:
July 88.9 °F
August 88.5 °F
June 83.1 °F
Warmest sea temperature:
August 78.7 °F
July 77.3 °F
September 76.0 °F
The most cold months:
January 48.5 °F
February 49.8 °F
December 53.2 °F
The most rainy months:
January 5 days
December 4 days
February 3 days
The most windy months:
August 14 mph
July 12 mph
September 12 mph
more details