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Weather in Karaj - 14-day forecast

Detailed weather forecast for Karaj, Iran: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Karaj
today☀️ 31°💧 0.2 mm
Sun☀️ 29°💧 0.2 mm
Mon☀️ 31°night 24°
Tue🌧️ 30°💧 2.3 mm
Wed🌧️ 31°💧 0.4 mm
Thu🌧️ 29°💧 0.3 mm
Fri🌧️ 30°💧 0.2 mm
Sat🌧️ 28°💧 0.2 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in Karaj, the forecast high is 31°C. Typical daytime temperatures at this time of year range from 22°C to 26°C, so it will be exceptionally warm. It is warmer than 99% of similar days.

31°Cexceptionally warm
usually 22°C–26°C
warmer than 99% of similar days
night: exceptionally warm rain: typical rainfall wind: typical
29°Cexceptionally warm
usually 22°C–26°C
warmer than 99% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally light
31°Cexceptionally warm
usually 22°C–26°C
warmer than 99% of similar days
night: exceptionally warm rain: less rain than usual wind: stronger than usual
30°Cexceptionally warm
usually 22°C–25°C
warmer than 99% of similar days
night: exceptionally warm rain: exceptionally wet wind: stronger than usual
31°Cexceptionally warm
usually 22°C–25°C
warmer than 99% of similar days
night: exceptionally warm rain: more rain than usual wind: typical
29°Cexceptionally warm
usually 21°C–25°C
warmer than 99% of similar days
night: exceptionally warm rain: more rain than usual wind: stronger than usual
30°Cexceptionally warm
usually 21°C–25°C
warmer than 99% of similar days
night: exceptionally warm rain: typical rainfall wind: stronger than usual

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
15°25°35° 1981: 22°C1982: 23°C1983: 24°C1984: 21°C1985: 24°C1986: 23°C1987: 22°C1988: 24°C1989: 26°C1990: 26°C1991: 24°C1992: 21°C1993: 24°C1994: 20°C1995: 25°C1996: 26°C1997: 20°C1998: 23°C1999: 25°C2000: 24°C2001: 24°C2002: 26°C2003: 24°C2004: 26°C2005: 24°C2006: 24°C2007: 26°C2008: 23°C2009: 21°C2010: 24°C2011: 23°C2012: 22°C2013: 24°C2014: 25°C2015: 22°C2016: 23°C2017: 25°C2018: 25°C2019: 22°C2020: 23°C2021: 23°C2022: 24°C2023: 26°C2024: 26°C2025: 26°C 2026 forecast: 30°C current forecast 30°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 24°C by day. The coolest year was 1994 (20°C) and the warmest was 2004 (26°C). The current forecast averages 30°C - higher than in 100% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Karaj

Karaj - 14-day weather forecast infographic

Karaj 30 & 45-day weather - long-range outlook

Next 16 days · forecast
29°
around 26° at night · days with rain: 1
Weeks 3-4 · avg for September
32°
around 21° at night · rain chance 5%
Weeks 5-7 · avg for October
24°
around 14° at night · rain chance 14%
The 30 & 45-day outlook for Karaj: the next 16 days are a numerical forecast updated daily - on average 29° by day and 26° at night. Further out we rely on multi-year climate averages: around 32° in September, and about 24° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Karaj

Saturday5 September 2026
☀️31°clear sky
sunrise 05:40 · sunset 18:29 · night 25° · evening 30° · rain 0.18 mm · humidity 21% · wind 4 m/s · clouds 19%
Sunday6 September 2026
☀️29°clear sky
sunrise 05:41 · sunset 18:27 · night 29° · evening 32° · rain 0.15 mm · humidity 20% · wind 3 m/s · clouds 14%
Monday7 September 2026
☀️31°clear sky
sunrise 05:42 · sunset 18:26 · night 24° · evening 33° · humidity 16% · wind 6 m/s · clouds 17%
Tuesday8 September 2026
🌧️30°light rain
sunrise 05:43 · sunset 18:24 · night 24° · evening 25° · rain 2.3 mm · humidity 23% · wind 6 m/s · clouds 36%
Wednesday9 September 2026
🌧️31°light rain
sunrise 05:44 · sunset 18:23 · night 25° · evening 32° · rain 0.44 mm · humidity 22% · wind 6 m/s · clouds 97%
Thursday10 September 2026
🌧️29°light rain
sunrise 05:44 · sunset 18:21 · night 26° · evening 29° · rain 0.27 mm · humidity 17% · wind 6 m/s · clouds 2%
Friday11 September 2026
🌧️30°light rain
sunrise 05:45 · sunset 18:20 · night 23° · evening 30° · rain 0.15 mm · humidity 22% · wind 6 m/s · clouds 2%
Saturday12 September 2026
🌧️28°light rain
sunrise 05:46 · sunset 18:19 · night 26° · evening 29° · rain 0.15 mm · humidity 30% · wind 6 m/s · clouds 1%
Sunday13 September 2026
☀️29°clear sky
sunrise 05:47 · sunset 18:17 · night 26° · evening 30° · humidity 26% · wind 5 m/s · clouds 2%
Monday14 September 2026
☀️29°clear sky
sunrise 05:47 · sunset 18:16 · night 28° · evening 30° · humidity 27% · wind 5 m/s
Tuesday15 September 2026
☀️30°clear sky
sunrise 05:48 · sunset 18:14 · night 30° · evening 30° · humidity 21% · wind 4 m/s
Wednesday16 September 2026
☀️31°clear sky
sunrise 05:49 · sunset 18:13 · night 25° · evening 31° · humidity 17% · wind 5 m/s · clouds 69%
Thursday17 September 2026
☀️28°clear sky
sunrise 05:50 · sunset 18:11 · night 26° · evening 29° · humidity 22% · wind 5 m/s · clouds 1%
Friday18 September 2026
☀️29°clear sky
sunrise 05:50 · sunset 18:10 · night 29° · evening 31° · rain 0.12 mm · humidity 17% · wind 3 m/s · clouds 4%
Saturday19 September 2026
☀️30°clear sky
sunrise 05:51 · sunset 18:08 · night 23° · evening 31° · humidity 16% · wind 6 m/s
Sunday20 September 2026
☀️23°clear sky
sunrise 05:52 · sunset 18:07 · night 23° · evening 28° · humidity 45% · wind 5 m/s

UV index in Karaj - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTKaraj03681111+7.6UV HIGHtoday, daily maxSPF 30-50, a hat and sunglasses are a must. Betterstay in shade between 11:00 and 15:00.Unprotected fair skin may burn in about 25 min8Sat5.098Sun6.098Mon7.097Tue8.097Wed9.097Thu10.097Fri11.097Sat12.097Sun13.097Mon14.097Tue15.097Wed16.097Thu17.097Fri18.097Sat19.097Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Karaj is 8 (high) - unprotected fair skin can burn in about 25 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Karaj weather through the year

Karaj - annual climate

Warmest, driest months on average: March, April, May, September.

Nearby and related places

TehranQomRashtEsfahanLnkranKermanMashhadAhvaz

FAQ - Karaj weather

What is the weather like in Karaj today?
Today it is about 31° during the day and 25° at night, clear sky.
How far ahead can I check the forecast for Karaj?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.