Istanbul Weather in April
Thinking of visiting Istanbul in April? Expect moderate temperatures reaching 16°C (61°F) during the day, dropping to 10°C (50°F) at night, with some rainfall likely.
Rainfall in Istanbul in April
You can expect rain on around 11 days based on historical patterns, with 51 mm (2 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Istanbul in April
In April, expect moderate temperatures in Istanbul, with highs of 16°C (61°F) and lows of 10°C (50°F) at night. Conditions are often most pleasant around the middle of the day. With lows around 10°C (50°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Istanbul in April
The area experiences a moderate amount of sunshine, with approximately 180 hours of sunlight expected. This means a decent mix of sun and overcast.
Average water temperature in April
At 10°C (50°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Istanbul.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Turkey, check out our Istanbul's climate page.
Istanbul Temperature in April
Min Temperature
10°C (50°F)
Max Temperature
16°C (61°F)
Water Temperature
10°C (50°F)
Chance of Rain
36%
Precipitation
51 mm (2 in)
Rainy days
11 days
Sunshine
180 hours
Percentage Sunshine
46%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Istanbul typically rise from around 15°C (59°F) at the start of April to approximately 18°C (64°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°F).
Average temperatures in April
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in April
Historical weather for Istanbul in April
Browse day-by-day weather records for Istanbul spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Istanbul historical weather extremes in April
Based on weather observations in Istanbul between 1994 and 2026, these are the recorded extremes during April.
- On April 22, 2008, temperatures climbed to 29°C (84°F), marking the warmest April day on record.
- Istanbul experienced its chilliest April day on April 8, 2003, reaching only 6°C (43°F).
- Istanbul registered its coldest April night on April 4, 2005, with temperatures dropping to 0°C (32°F).
Best Places in Turkey in April
Find out more about the weather in Turkey and which places have the best travel conditions in this month. See all of Turkey in April →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Istanbul in April
The weather can be unpredictable in April, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket. The water temperature sits at about 10°C (50°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Istanbul in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Turkey, check out our Istanbul's climate page.
Temperature Rainfall Sunshine Water Temp
See the full Istanbul climate overview or explore weather in Turkey.
