11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Partly cloudy
12°
Feels like 12°
Wind↑ ENE 6 km/h
Humidity 68 %
Evening
Overcast
14°
Feels like 14°
Wind↑ ENE 9 km/h
Gusts21 km/h
Humidity 66 %
💧 0.1 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Light rain
13°
Feels like 13°
Wind↑ SW 12 km/h
Humidity 91 %
💧 2.6 mm
Evening
Rain
12°
Feels like 12°
Wind↑ NNW 23 km/h
Gusts36 km/h
Humidity 86 %
💧 7.6 mm
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Partly cloudy
11°
Feels like 11°
Wind↑ NNE 3 km/h
Humidity 78 %
💧 0.1 mm
Evening
Partly cloudy
13°
Feels like 13°
Wind↑ SE 10 km/h
Gusts18 km/h
Humidity 71 %
14-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Light rain
15°
Feels like 15°
Wind↑ S 24 km/h
Gusts58 km/h
Humidity 78 %
💧 1.7 mm
Istanbul forecast in charts · next 7 days
The week ahead: highs and lows
≈ A week close to the usual temperatures
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Istanbul climate: what a normal year looks like
Swimmers find the warmest sea in August (24 °C) and the coolest in February (8 °C).
From 15 h 07 min of daylight in late June to 9 h 13 min in late December.
The hottest stretch is August, when afternoons average 27 °C; the coldest is January, when nights average 5 °C. Between those two months the average temperature changes by 19 °C.
Afternoons climb to 25 °C only in July and August, with a typical peak of 27 °C in August.
Forecast highs for the coming week average 18 °C, 1 °C cooler than a normal October (19 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Sea
Jan
8 °C
5 °C
90 mm
9 °C
Feb
8 °C
5 °C
75 mm
8 °C
Mar
11 °C
6 °C
77 mm
8 °C
Apr
15 °C
10 °C
50 mm
11 °C
May
19 °C
14 °C
38 mm
16 °C
Jun
25 °C
19 °C
36 mm
21 °C
Jul
27 °C
22 °C
27 mm
23 °C
Aug
27 °C
22 °C
24 mm
24 °C
Sep
24 °C
19 °C
51 mm
22 °C
Oct
19 °C
15 °C
80 mm
19 °C
Nov
14 °C
11 °C
77 mm
15 °C
Dec
10 °C
7 °C
104 mm
11 °C
Whole year
17 °C
13 °C
730 mm
16 °C
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 41.01° N, 28.95° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Istanbul: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.510µg/m³
PM1013µg/m³
O₃49µg/m³
NO₂16µg/m³
SO₂4µg/m³
Pollen
AlderNone
BirchNone
GrassNone
MugwortNone
OliveNone
RagweedNone
Copernicus CAMS model, updated several times a day.
Rain radar around Istanbul
Rain observed over the last two hours by official weather radars around Istanbul, followed by the radar forecast for the next hour where the weather service provides one.
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Rain radarLast two hours, then forecast where available · drag the timeline
No open weather radar covers Istanbul yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Istanbul
Waning gibbous
87 % illuminated · 18.3 days
Rise 02:02 Set 18:34
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Moonrise and moonset in local time (Europe/Istanbul); phase and lit fraction from a synodic calculation.
Sea and tides near Istanbul
Tide station used: Istanbul
🌊 Sea surface
18.5 °C
satellite, 29/10
Sea state
Smooth
waves 0.7 m
Period
4 s
Swell
0.0 m
TodayThu 29/10
Low tide04:310.0 m
High tide11:590.1 m
Low tide19:370.0 m
High tide23:410.0 m
TomorrowFri 30/10
Low tide04:450.0 m
High tide12:380.1 m
Low tide21:080.0 m
SatSat 31/10
High tide13:210.1 m
SunSun 01/11
Low tide04:070.0 m
High tide14:140.1 m
Indicative heights above chart datum. Coefficient: 20 for the weakest tides, 120 for the strongest. · more tide detail on TidesAtlas
Look up a past day in Istanbul
Curious about the weather in Istanbul on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Istanbul weather at a glance
This page gathers everything about the weather in Istanbul, Istanbul: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “light rain”, it is 18 °C (feels like 18 °C) and the wind blows at 15 km/h.
Expected range today: 16 °C to 18 °C and around 11 mm of rain. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms, plus the tide times for Istanbul.
Use the Istanbul forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
