Iași in Summer
In summer (June, July and August), Iași sees average daytime highs around 27°C and overnight lows near 16°C, with 196 mm of rain over about 28 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 41% of the time across summer, and the air most often feels dry.
Summer is Iași's best season of the year to visit on our travel score. For the whole year in context, see Iași's year-round climate.
- Avg daytime high
- 27°C
- warmest season of the year
- Avg overnight low
- 16°C
- Rainfall
- 196 mm
- 28 wet days
- Avg wind
- 9 km/h
- Travel score
- 6.6
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Iași in Summer
Across summer, daytime highs hold fairly steady around 27°C.
A typical summer day in Iași reaches about 27°C and drops to 16°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Iași
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Iași weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 1° / -5° | 28 | 6.5 | 5.1 | 8.7 | 0.0 |
| Feb | 3° / -4° | 28 | 6.1 | 3.6 | 10 | 0.0 |
| Mar | 9° / 1° | 36 | 8.6 | 2.4 | 11.6 | 1.9 |
| Apr | 16° / 6° | 45 | 8.5 | 0.3 | 13.3 | 5.2 |
| May | 22° / 11° | 61 | 10.4 | 0 | 14.8 | 6.7 |
| Jun | 26° / 15° | 75 | 10.7 | 0 | 15.6 | 6.6 |
| Jul | 28° / 17° | 72 | 10 | 0 | 15.3 | 6.4 |
| Aug | 28° / 16° | 49 | 7.1 | 0 | 14 | 6.8 |
| Sep | 22° / 12° | 50 | 7.2 | 0 | 12.4 | 7.1 |
| Oct | 15° / 7° | 44 | 6.4 | 0.1 | 10.6 | 5.1 |
| Nov | 8° / 2° | 36 | 5.9 | 2.1 | 9.1 | 1.5 |
| Dec | 2° / -3° | 35 | 7.1 | 4.2 | 8.4 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 41% of the time across summer.
Chance of precipitation in Summer
Iași gets around 196 mm of rain over 28 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 24 min in early June to 13 h 12 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.6 kWh/m².
Is summer a good time to visit Iași?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Iași for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Iași in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Iași sees daytime highs around 27°C and nights near 16°C. Pack light clothes. Worth having: rain gear and sun protection. About 28 days see rain.
UV index in Iași in Summer
Clear-sky midday UV across summer averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Iași peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 6 | 5 | 7 | 8 | 7 | 5 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | High | Moderate | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 6 | High |
| May | 5 | Moderate |
| Jun | 7 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Iași in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Iași is worst in July — around 35 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 19 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Iași's WHO annual average of 27 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 24 | 26 | 34 | 28 | 28 | 32 | 35 | 30 | 25 | 21 | 21 | 19 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 24 | Moderate |
| Feb | 26 | Moderate |
| Mar | 34 | Moderate |
| Apr | 28 | Moderate |
| May | 28 | Moderate |
| Jun | 32 | Moderate |
| Jul | 35 | Moderate |
| Aug | 30 | Moderate |
| Sep | 25 | Moderate |
| Oct | 21 | Moderate |
| Nov | 21 | Moderate |
| Dec | 19 | Moderate |
Where is Iași?
Iași sits at 47.2°N, 27.6°E, 66 m above sea level, in Romania. The nearest listed city is Ungheni, 16 km away.
Topography around Iași
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Iași.
Within 3 km, the terrain around Iași has only modest variations in elevation — a maximum elevation change of 114 m around an average of 74 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 396 m; within 80 km, significant variations in elevation — a maximum elevation change of 583 m.
The land around Iași is covered by artificial surfaces (44%) and trees (31%) within 3 km, cropland (38%), trees (29%) and grassland (24%) within 16 km, and cropland (47%), trees (27%) and grassland (23%) within 80 km.
Romania travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 44% of US
- price level, 2025
- GDP per capita
- $22,538
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 82%
- of population, 2024
- Homicide rate
- 1.1
- per 100k, 2023
- Road deaths
- 10.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 605
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Iași (47.1667°, 27.6°, elevation 66 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.