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İskenderun weather by month: averages, rainfall & climate trends

Average temperatures in İskenderun follow a clear seasonal rhythm, rising and falling by 19.1°C over the course of the year. The warm months are largely dry. Most of the year's rain arrives between November and April. İskenderun weather by month: average temperatures, rainfall, extremes and how the climate has changed since 1940.

Today vs average

−0.3°Chigh near average

26° / 21°Today
26° / 17°Average
see today in detail →

How it's changed

+2.1°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–490frost days a year now (2016–2025) · 1 in the 1940sfrost days a year · 1 in the 1940s140days above 30°C a year now (2016–2025) · 113 in the 1940sdays above 30°C · 113 in the 1940s+2.1°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 126 mmhigh 13°low 7°February, rain 113 mmhigh 15°low 8°March, rain 109 mmhigh 18°low 10°April, rain 68 mmhigh 22°low 13°May, rain 39 mmhigh 27°low 17°June, rain 15 mmhigh 31°low 21°July, rain 6 mmhigh 34°low 24°August, rain 7 mmhigh 34°low 25°September, rain 20 mmhigh 32°low 22°October, rain 56 mmhigh 28°low 18°November, rain 73 mmhigh 21°low 13°December, rain 112 mmhigh 15°low 9°wettest month January, 126 mm · 744 mm a yearsee month by month →

Right now

What it's doing today vs the historical average for this date.
Clear

Right now

21.4°

22°feels like
68%humidity
15°dew point
7 km/hfrom S
UV index0.0
sunrise06:49sunset17:50day length11h 01m
ThuMostly clear26°21°
FriClear27°21°
SatClear28°22°
SunClear26°21°
MonOvercast28°23°
TueOvercast26°22°
WedThunderstorm22°19°

On this date: October 21

Today (forecast)
26° / 21°
Average for October 21
26° / 17°

High near average · −0.3°C

  • Highest since 1940: 34.0° · 2020
  • Lowest since 1940: 12.2° · 1984
  • One year ago: 24° / 19°

Every October 21 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 21 on record (n = 87). Outlined dots are today's forecast.

Area we sample

Each city's history comes from one ERA5 grid cell, about 28 km across, shown by the dashed box. Near mountains or coasts, conditions can vary across the cell.

Location & data

Historical weather for İskenderun is sampled from the ECMWF ERA5 reanalysis at 36.59°N, 36.17°E, with daily records since 1940.

Coordinates
36.59°N, 36.17°E
Time zone
Europe/Istanbul
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

16 of the last 31 days were warmer than the historical average for that date. Average difference: 0.0°C.

Each bar is one day, from morning low to afternoon high. Warm-colored bars are days whose mean ran above average; cool bars ran below. The dot inside the bar is the daily mean. The shaded band is the typical 10–90% range expected for that date. Average = the day's mean temperature averaged across every year of record (1940–2026) for that calendar date.

This date over the years

One dot per year, showing the mean temperature on this calendar date. Dots are warmer or cooler than the long-term average (dashed line); the shaded band is the typical 10–90% range, and the highlighted dot is today's forecast. Based on ERA5 reanalysis: modelled estimates, not station readings.

Weather by month

Average temperatures and rainfall for each month: a typical year, from the full record.

Climate overview

The warmest month is August, with typical afternoon highs of 34.2°C and nights around 24.5°C. Roughly 140 days a year now top 30°C. At the other extreme, January brings afternoon highs of about 13.2°C and typical overnight lows of 6.9°C. Frost is essentially unknown.

In total, İskenderun averages about 744 mm of precipitation a year; January is usually the wettest month (126 mm) and July the driest (6 mm).

Over the full record (since 1940), the annual mean temperature in İskenderun has risen by 2.1°C between its first decade and its last. The last decade has also run drier, about 10% below the long-term precipitation average.

Climate graph (climograph)

August is the warmest month, January the coolest: a yearly swing of 19°C. Wettest month: January (~126 mm). Whole year averages ~744 mm of rain.

Bars = average monthly rainfall (right axis). Lines = average daily high and low (left axis). Average = each month's value averaged across every year of record (1940–2026).

Rainy days by month

About 73 rainy days a year: most in January (~11), fewest in July (almost none).

Bars = average number of days with ≥ 2 mm per month. Hover for the monthly rainfall total.

Monthly wind

Average daily peak wind at 10 m, by month.

Monthly solar energy

Average daily incoming solar energy in megajoules per square metre: the record's own proxy for how sunny the month is.

İskenderun month by month: what to expect

Typical conditions for each month, averaged across the full record (since 1940). Daylight is the time from sunrise to sunset. Highest and Lowest are the most extreme values in the ERA5 dataset (modelled since 1940), so they can differ from official weather-station readings.

MonthAvg highAvg lowRainRainy daysDaylightHighestLowest
January13.2°6.9°126 mm119.8 h21.8° (2021)−3.7° (1973)
February14.9°7.6°113 mm1010.7 h26.6° (2016)−7.1° (1950)
March18.0°9.9°109 mm1111.7 h31.4° (2025)−0.5° (1942)
April22.4°13.2°68 mm812.9 h36.9° (2008)3.0° (1946)
May26.9°17.0°39 mm513.9 h38.7° (1995)10.1° (1964)
June30.9°21.0°15 mm214.5 h41.4° (2012)13.7° (1991)
July33.7°24.1°6 mm014.3 h41.6° (2012)19.1° (1958)
August34.2°24.5°7 mm013.4 h44.2° (2025)19.3° (1960)
September32.0°22.0°20 mm212.2 h43.5° (2020)12.3° (1970)
October27.5°18.2°56 mm611.0 h38.5° (1943)8.2° (1946)
November20.9°13.0°73 mm710.0 h30.6° (1966)0.9° (1953)
December15.1°8.8°112 mm109.5 h27.1° (2010)−0.7° (2013)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +2.1°C.

Each vertical stripe is one year. Color encodes how much that year's annual mean differed from the long-term average. Average = each year's annual mean compared to the average of all years (1940–2026). cooler ← → warmer

Annual mean temperature

Long-term trend: +0.23°C per decade.

One point per year, showing the temperature averaged across the whole year. The dashed line is the least-squares long-term trend. Based on ERA5 reanalysis: modelled estimates, not station readings.

Seasonal warming

Mar–May is warming fastest: +0.28°C per decade.

Each faint line is one three-month period's average per year; the bold dashed line is its long-term trend. Different parts of the year often warm at different rates. Based on ERA5 reanalysis: modelled estimates, not station readings.

Hot days vs frost days

Days ≥ 30°C per year: 113.3 early in the record → 139.8 recently. Frost days: 1 → 0.

Thin lines are raw yearly counts; thick lines are the smoothed trend that removes year-to-year noise. The hot-day threshold is auto-picked per city so the line actually moves. Average = a centered 5-year rolling average to smooth weather noise.

Yearly hot & cold extremes

Hottest day since 1940 in 2025, coldest in 1950: 44.2°C / −7.1°C.

One point per year: the single hottest and coldest day recorded that year.

Annual rainfall

~744 mm/year on average. Last decade: −10% vs that average. Long-term trend: −14 mm per decade.

One bar per year of total rainfall. Dashed line is the long-term average. Average = the average annual rainfall across every year of record (1940–2026).

Day-by-day grid

Each tiny square is one calendar day across the full record, about 30,000 days per city. Use the mode switch above the chart: Anomaly colors each day by how far it ran from the historical average for that date (red = warmer, blue = cooler), Daily mean temp shows the absolute mean temperature for the day (useful to see seasons and heatwaves), and Precipitation shows daily rainfall (useful to spot wet/dry seasons and droughts). Average = the long-term average for that calendar date (1940–2026).

Frequently asked questions about İskenderun

Which is the warmest month in İskenderun?
On long-term average, the warmest month in İskenderun is August (mean daily temperature of about 29.0°C) and the coolest is January (about 9.9°C).
How does today's temperature in İskenderun compare to the historical average?
On October 21, 2026, İskenderun is forecast to reach a high of 26.1°C and a low of 20.6°C. The long-term average for this date (the full record since 1940) is a high of 26.4°C and a low of 17.3°C, so today's high is about equal to that average.
How much has İskenderun warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in İskenderun is about 2.1°C warmer.
How much does it rain in İskenderun?
İskenderun receives about 744 mm of precipitation per year on long-term average, with January typically the wettest month.
What is the average temperature in İskenderun?
Over the full record (since 1940), the annual mean temperature in İskenderun is about 19.6°C. The warmest month is August and the coolest is January.
What are the average temperatures in İskenderun by month?
Average daily highs and lows for each month in İskenderun (°C, full record since 1940): January 13°/7°, February 15°/8°, March 18°/10°, April 22°/13°, May 27°/17°, June 31°/21°, July 34°/24°, August 34°/25°, September 32°/22°, October 28°/18°, November 21°/13°, December 15°/9°.
What is the weather like in İskenderun in summer?
Summer in İskenderun (June to August) is dry and hot. Afternoons run 31–34°C and nights 21–25°C; August is the warmest month. Hardly any rain falls.
What is the weather like in İskenderun in winter?
December to February is winter in İskenderun, and it is wet and cool. Expect 13–15°C by day and 7–9°C at night, with January the coldest month. Rain falls on about 11 days a month, adding up to around 117 mm. It is the wettest season of the year.
What is the weather like in İskenderun in spring?
March to May is spring in İskenderun, and it is pleasantly warm. March starts at 18°C by day and 10°C at night; by May it is 27°C and 17°C. Rain eases through the season: 11 rainy days and 109 mm in March, 5 days and 39 mm in May.
What is the weather like in İskenderun in autumn?
September to November is autumn in İskenderun, and it is warm. September still brings 32°C afternoons and 22°C nights, November only 21°C and 13°C. Rain rises from 20 mm on 2 days in September to 73 mm on 7 days in November.
How many days a year does it rain in İskenderun?
On long-term average, İskenderun has about 73 days a year with at least 2 mm of rain or snow. The annual total is roughly 744 mm.

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