August weather forecastIstanbul, Turkey
August
Weather in August
August holds its own as the peak of Istanbul's summer, with average high temperatures reaching a scorching 27.8°C (82°F). The month holds the record for the least rainfall, only 11mm (0.43"), and not dunking below the high annual average humidity level of 68%. The inviting sea temperatures continue to draw beachgoers, promising pleasant swimming and water sports experiences. The vibrant festivals and events lined up in August make the most of the stunning weather. Overall, the month is characterized by long, sunny days, vivacious outdoor activities, and thrilling summer outings.Temperature
The unfolding of August shows an average high-temperature of a still warm 27.8°C (82°F), indicating a slight variance from July's 27.9°C (82.2°F). Istanbul records a consistent average nighttime temperature of 23.3°C (73.9°F) in August, slightly lower than the daytime high.Heat index
The heat index value during August is calculated to be a tropical 30°C (86°F). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
In August, the average relative humidity in Istanbul is 68%.Rainfall
August is the month with the least rainfall. Rain falls for 3.8 days and accumulates 11mm (0.43") of precipitation.Snowfall
In Istanbul, snow does not fall in April through November.Sea temperature
August is the month with the warmest seawater, with an average sea temperature of 24.9°C (76.8°F).Note: For someone not comfortable with cold, swimming in 24.9°C (76.8°F) waters might be a stretch. However, with favorable conditions like abundant sunshine, mild wind, and warm air temperatures, the experience can be improved. And while wetsuits are not a must, they can be considered.
Daylight
In August, the average length of the day is 13h and 46min.On the first day of August in Istanbul, sunrise is at 06:00 and sunset at 20:20. On the last day of the month, sunrise is at 06:30 and sunset at 19:38 +03.
Sunshine
In Istanbul, Turkey, the average sunshine in August is 9.7h.UV index
In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 6 during August, leads to the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Istanbul, Turkey
- Average high temperature in August: 27.8°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 August: 23.3°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 August
Istanbul, Turkey
- Average pressure in August: 1013mbar
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 August
Istanbul, Turkey
- Average wind speed in August: 20.5km/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 August
Istanbul, Turkey
- Average humidity in August: 68%
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 August
Istanbul, Turkey
- Average rainfall in August: 11mm
The wettest month (with the highest rainfall) is December (52mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days in August
Istanbul, Turkey
- Average rainfall days in August: 3.8 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 August
Istanbul, Turkey
- Average snowfall in August: 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 August
Istanbul, Turkey
- Average snowfall days in August: 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 August
Istanbul, Turkey
- Average sea temperature in August: 24.9°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 August /
Average sunshine in August
Istanbul, Turkey
- Average daylight in August: 13h and 48min
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 August: 9h 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 August
Istanbul, Turkey
- Average sunshine days in August: 25.5 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 August
Istanbul, Turkey
- Average UV index in August: 6
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 August
Istanbul, Turkey
- Average cloud cover in August: 12
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 August
Istanbul, Turkey
- Average visibility in August: 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).
