Weather in Istanbul in May
May in Istanbul is mild with average temperatures around 17.5°C (63.5°F). Light rainfall with only 36mm expected.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
21.2°C
70.2°F
Low
13.9°C
57.0°F
Precipitation
36 mm
1.4 inches
~7 rainy days
Conditions
Humidity
74%
Comparison to Adjacent Months
May is 5.2°C warmer than April.
May is 4.8°C cooler than June.