October weather forecastIstanbul, Turkey
October
Weather in October
Istanbul in October feels the full effect of autumn with temperatures winding down and rainfall registering an uptick to 42mm (1.65"). October's transition to cooler weather brings vibrancy to the city's diverse landscape as fall foliage paints the town in rich colors. Despite the ranking as one of the windier months of the year, the city exudes a calm charm. The sun continues to illuminate the city for considerable hours, allowing ample time for sight-seeing. The presence of a slight nip in the air accompanies the early setting sun, adding a soothing appeal to twilight.Temperature
The advent of October in Istanbul brings a subtle shift in temperature, with the average high moving from a warm 24.3°C (75.7°F) in September to a comfortable 19.4°C (66.9°F). An average low-temperature of 15.5°C (59.9°F) is witnessed throughout the month of October in Istanbul, a mere drop from the daytime peak.Humidity
In Istanbul, the average relative humidity in October is 73%.Rainfall
In Istanbul, during October, the rain falls for 12.5 days and regularly aggregates up to 42mm (1.65") of precipitation. In Istanbul, during the entire year, the rain falls for 130.7 days and collects up to 400mm (15.75") of precipitation.Snowfall
In Istanbul, snow does not fall in April through November.Sea temperature
In Istanbul, in October, the average water temperature is 18.4°C (65.1°F).Note: Swimming becomes less enjoyable for most at a surface water temperature of 18.4°C (65.1°F). As the temperature decreases below 21°C (69.8°F), breathing becomes increasingly difficult.
Daylight
The average length of the day in October is 11h and 7min.On the first day of October in Istanbul, sunrise is at 07:01 and sunset at 18:46. On the last day of the month, sunrise is at 07:34 and sunset at 18:01 +03.
Sunshine
The average sunshine in October in Istanbul, Turkey, is 7.7h.UV index
The average daily maximum UV index in October is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In October, the maximum UV index of 4 suggests this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Istanbul, Turkey
- Average high temperature in October: 19.4°C
The warmest month (with the highest average high temperature) is July (27.9°C).
The month with the lowest average high temperature is January (8.5°C).
- Average low temperature in October: 15.5°C
The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).
Average pressure in October
Istanbul, Turkey
- Average pressure in October: 1018.1mbar
The month with the highest atmospheric pressure is December (1019.7mbar).
The month with the lowest atmospheric pressure is July (1011.7mbar).
Average wind speed in October
Istanbul, Turkey
- Average wind speed in October: 17.8km/h
The windiest month (with the highest average wind speed) is August (20.5km/h).
The calmest month (with the lowest average wind speed) is May (14km/h).
Average humidity in October
Istanbul, Turkey
- Average humidity in October: 73%
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are June and July (67%).
Average rainfall in October
Istanbul, Turkey
- Average rainfall in October: 42mm
The wettest month (with the highest rainfall) is December (52mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days in October
Istanbul, Turkey
- Average rainfall days in October: 12.5 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (3.8 days).
Average snowfall in October
Istanbul, Turkey
- Average snowfall in October: 0mm
The month with the highest snowfall is January (24mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in October
Istanbul, Turkey
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in October
Istanbul, Turkey
- Average sea temperature in October: 18.4°C
The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (7.8°C).
Average daylight in October /
Average sunshine in October
Istanbul, Turkey
- Average daylight in October: 11h and 6min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 7h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in October
Istanbul, Turkey
- Average sunshine days in October: 15.1 days
The month with the most sunshine days is August (25.5 days).
The month with the least sunshine days is February (12.6 days).
Average UV index in October
Istanbul, Turkey
- Average UV index in October: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in October
Istanbul, Turkey
- Average cloud cover in October: 37
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in October
Istanbul, Turkey
- Average visibility in October: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).
