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Weather in Iasi - 14-day forecast

Detailed weather forecast for Iasi, Romania: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Iasi
today🌧️ 34°💧 0.8 mm
Sun🌧️ 21°💧 0.4 mm
Mon☀️ 23°💧 0.4 mm
Tue☁️ 25°💧 0.9 mm
Wed☀️ 28°💧 0.4 mm
Thu☀️ 29°💧 0.1 mm
Fri☁️ 27°💧 4.1 mm
Sat🌧️ 25°💧 0.5 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 Iasi, the forecast high is 34°C. Typical daytime temperatures at this time of year range from 21°C to 29°C, so it will be exceptionally warm. It is warmer than 96% of similar days.

34°Cexceptionally warm
usually 21°C–29°C
warmer than 96% of similar days
night: exceptionally warm rain: more rain than usual wind: exceptionally strong
21°Ccooler than usual
usually 21°C–29°C
cooler than 82% of similar days
night: warmer than usual rain: typical rainfall wind: exceptionally strong
23°Cnear normal
usually 21°C–29°C
night: exceptionally warm rain: typical rainfall wind: lighter than usual
25°Cnear normal
usually 21°C–28°C
night: exceptionally warm rain: more rain than usual wind: exceptionally light
28°Cwarmer than usual
usually 21°C–28°C
warmer than 76% of similar days
night: exceptionally warm rain: typical rainfall wind: typical
29°Cwarmer than usual
usually 21°C–28°C
warmer than 84% of similar days
night: exceptionally warm rain: typical rainfall wind: stronger than usual
27°Cwarmer than usual
usually 21°C–28°C
warmer than 77% of similar days
night: exceptionally warm rain: exceptionally wet wind: typical

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: 23°C1982: 29°C1983: 25°C1984: 27°C1985: 20°C1986: 26°C1987: 25°C1988: 18°C1989: 19°C1990: 23°C1991: 21°C1992: 21°C1993: 25°C1994: 28°C1995: 22°C1996: 18°C1997: 22°C1998: 23°C1999: 23°C2000: 21°C2001: 23°C2002: 25°C2003: 20°C2004: 20°C2005: 27°C2006: 24°C2007: 22°C2008: 29°C2009: 26°C2010: 19°C2011: 25°C2012: 26°C2013: 22°C2014: 28°C2015: 24°C2016: 31°C2017: 27°C2018: 22°C2019: 28°C2020: 28°C2021: 24°C2022: 24°C2023: 26°C2024: 27°C2025: 29°C 2026 forecast: 27°C current forecast 27°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 1988 (18°C) and the warmest was 2016 (31°C). The current forecast averages 27°C - higher than in 78% 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.

Weather warnings - Iasi

No active weather warnings for Iasi (region: IASI). The national weather service is not forecasting dangerous conditions.

14-day forecast - Iasi

Iasi - 14-day weather forecast infographic

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

Next 16 days · forecast
24°
around 19° at night · days with rain: 5
Weeks 3-4 · avg for September
24°
around 11° at night · rain chance 35%
Weeks 5-7 · avg for October
16°
around 5° at night · rain chance 39%
The 30 & 45-day outlook for Iasi: the next 16 days are a numerical forecast updated daily - on average 24° by day and 19° at night. Further out we rely on multi-year climate averages: around 24° in September, and about 16° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Iasi

Saturday5 September 2026
🌧️34°light rain
sunrise 06:33 · sunset 19:43 · night 18° · evening 25° · rain 0.76 mm · humidity 27% · wind 10 m/s · clouds 3%
Sunday6 September 2026
🌧️21°light rain
sunrise 06:35 · sunset 19:41 · night 14° · evening 22° · rain 0.4 mm · humidity 50% · wind 9 m/s · clouds 54%
Monday7 September 2026
☀️23°clear sky
sunrise 06:36 · sunset 19:39 · night 18° · evening 22° · rain 0.36 mm · humidity 30% · wind 4 m/s · clouds 6%
Tuesday8 September 2026
☁️25°overcast clouds
sunrise 06:37 · sunset 19:37 · night 20° · evening 27° · rain 0.93 mm · humidity 26% · wind 2 m/s · clouds 91%
Wednesday9 September 2026
☀️28°clear sky
sunrise 06:39 · sunset 19:35 · night 22° · evening 30° · rain 0.39 mm · humidity 29% · wind 4 m/s · clouds 1%
Thursday10 September 2026
☀️29°clear sky
sunrise 06:40 · sunset 19:33 · night 22° · evening 30° · rain 0.12 mm · humidity 28% · wind 7 m/s · clouds 1%
Friday11 September 2026
☁️27°broken clouds
sunrise 06:41 · sunset 19:31 · night 22° · evening 31° · rain 4.11 mm · humidity 35% · wind 6 m/s · clouds 59%
Saturday12 September 2026
🌧️25°light rain
sunrise 06:42 · sunset 19:29 · night 22° · evening 30° · rain 0.45 mm · humidity 53% · wind 6 m/s · clouds 100%
Sunday13 September 2026
🌧️27°moderate rain
sunrise 06:44 · sunset 19:27 · night 14° · evening 14° · rain 4.83 mm · humidity 29% · wind 7 m/s · clouds 90%
Monday14 September 2026
🌧️20°light rain
sunrise 06:45 · sunset 19:25 · night 14° · evening 18° · rain 0.57 mm · humidity 47% · wind 4 m/s · clouds 100%
Tuesday15 September 2026
☁️21°broken clouds
sunrise 06:46 · sunset 19:23 · night 16° · evening 23° · rain 7.77 mm · humidity 42% · wind 3 m/s · clouds 68%
Wednesday16 September 2026
🌤️26°scattered clouds
sunrise 06:48 · sunset 19:21 · night 20° · evening 27° · humidity 32% · wind 8 m/s · clouds 38%
Thursday17 September 2026
🌧️27°light rain
sunrise 06:49 · sunset 19:19 · night 19° · evening 25° · rain 1.8 mm · humidity 47% · wind 7 m/s · clouds 62%
Friday18 September 2026
🌤️23°a few clouds
sunrise 06:50 · sunset 19:17 · night 21° · evening 25° · humidity 39% · wind 4 m/s · clouds 17%
Saturday19 September 2026
🌧️21°light rain
sunrise 06:52 · sunset 19:15 · night 16° · evening 20° · rain 0.36 mm · humidity 42% · wind 5 m/s · clouds 74%
Sunday20 September 2026
🌧️15°light rain
sunrise 06:53 · sunset 19:13 · night 18° · evening 18° · rain 3.63 mm · humidity 53% · wind 6 m/s · clouds 100%

UV index in Iasi - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTIasi03681111+5.7UV MODERATEtoday, daily maxSeek shade around midday. SPF 30+, sunglasses and ahat for longer stays.Unprotected fair skin may burn in about 35 min6Sat5.096Sun6.096Mon7.096Tue8.096Wed9.096Thu10.095Fri11.093Sat12.094Sun13.094Mon14.092Tue15.093Wed16.095Thu17.095Fri18.095Sat19.095Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Iasi is 6 (moderate) - unprotected fair skin can burn in about 35 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

Pollen in Iasi - info for allergy sufferers

PLANT POLLEN · 4-DAY FORECASTIasiHighest pollen today: Ragweed883 grains/m³ · very high leveltoday5.09tomorrow6.09Mon7.09Tue8.09Grasses3343Mugwort48265568Ragweed8835452054nonelowmoderatehighvery highoff season: alder, birch, olive · values in grains/m³ (daily peak)pogodapodroze.pl · 2026-09-05
Today ragweed pollen is highest in Iasi - about 883 grains/m³, very high level. Allergy sufferers should limit time outdoors on dry, windy days and take medication as advised. Pollen levels are a CAMS model forecast and are indicative.

Iasi weather through the year

Iasi - annual climate

Warmest, driest months on average: April, May, June, July.

Upcoming public holidays in Romania: St. Andrew's Day — 30 November · National Day/Great Union — 1 December · Christmas Day — 25 December.

Nearby and related places

UngheniBaltiChisinauOradeaGalatiSatu MareConstantaSibiuCluj

FAQ - Iasi weather

What is the weather like in Iasi today?
Today it is about 34° during the day and 18° at night, light rain.
How far ahead can I check the forecast for Iasi?
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.