In general the best time to visit Iasi is probably August, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
The best time to visit may differ depending on what you are looking for:
The best time for a sunbathing holiday is June, July, August. Average maximum temperatures are up to +28°C in August and it has 12 sunny days on average.
In general, it’s pleasant to walk and do outdoor activities during May - September.
If you want to avoid wet weather, then your choice is January, November, December with the lowest chance of rain.
Average weather in Iasi in different months
This is the average weather in Iasi for each month based on historic data:
April, May, June, July, August, September usually has good weather. Average maximum temperature reaches +28°C during July.
In February, March, October, November the weather is average. Expect around 31 rainy days, and the precipitation amounts to approximately 203 mm in November.
January, December bring not the best weather. January is the coldest month with the temperature going down to -5°C.
Climate in Iasi
Here is the detailed breakdown of the climate in Iasi for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+20°C
+21°C
+27°C
+32°C
+35°C
+38°C
+42°C
+42°C
+37°C
+33°C
+25°C
+18°C
Average Maximum Temperature
+2°C
+4°C
+9°C
+16°C
+23°C
+26°C
+28°C
+28°C
+23°C
+16°C
+8°C
+3°C
Minimum Temperature
-26°C
-23°C
-19°C
-5°C
+1°C
+7°C
+10°C
+8°C
+2°C
-7°C
-20°C
-26°C
Avg. water temperature
-
-
-
-
-
-
-
-
-
-
-
-
Humidity, %
84
80
74
68
66
69
68
67
71
77
83
85
Rain, mm
129
115
120
96
75
82
81
72
93
117
203
137
Snow, mm
176
23
8
5
0
0
0
0
0
3
45
96
Average wind speed, m/s
2
2
2
2
2
2
2
2
2
2
2
2
Sunny Days
4
4
7
7
9
7
9
12
11
9
5
4
Cloud Days
15
13
11
8
6
5
5
5
8
11
14
15
Rainy Days
4
4
9
14
14
14
14
11
11
10
8
5
Snowy Days
9
7
4
1
0
0
0
0
0
0
3
7
Average Temperature
Here are the average maximum and minimum temperatures in Iasi during the whole year:
The hottest month in Iasi is August with average maximum temperature going up to +28°C. The coldest month is January with the lowest temperatures of -5°C.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Iasi looks throughout the year, in %:
The most humid month in Iasi is December with average humidity going up to 85%. The least humid month is May with an average humidity of 66%.
Rain
Amount of rainfall in mm. in Iasi during the whole year based on historical data:
The sunniest and driest month is August with approximately 12 sunny days and a total precipitation of around 72 mm. The rainiest and wettest month is November with approximately 8 rainy days and 203 mm of total precipitation.
Snow
Amount of snow in mm. in Iasi during the whole year based on historical data:
The snowiest month is January with approximately 9 snowy days.
FAQ
Frequently asked questions about the weather in Iasi:
What is the hottest month in Iasi?
The hottest month in Iasi is August with average maximum temperature of +28°C.
What is the coldest month in Iasi?
The coldest month in Iasi is January with minimum temperatures of -5°C.
Is Iasi worth visiting in winter?
Winter is usually not the best time to go to Iasi.
When does it rain the least in Iasi?
if you're looking to visit Iasi when it rains the least, you should plan your trip for November, December, January. During this time, rainfall is rare with the driest month being August with only 72 mm of rain.
Other cities in Romania
Check out the weather for other cities in Romania.
For this page, we’ve looked at the typical weather in Iasi, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.