Climate and monthly weather forecast
Iași, Romania


The climate of Iași

Iași, a significant city located in Romania, experiences a Humid Continental climate, designated in the Köppen climate classification as Dfb. This climate characteristically brings no dry season and a warm summer. The weather patterns of this region oscillate significantly, with temperatures ranging from -6.9°C (19.6°F) during the coldest months to 26.8°C (80.2°F) in the height of summer.

The city sees varying levels of rainfall throughout the year, from a low of 25mm (0.98") in October to a high of 101mm (3.98") in June. The frequency of rainy days also increases during the month of June with nine days of rainfall. Snowfall is observed during the colder months, primarily from November to March, peaking at 143mm (5.63") in February.

Daylight hours in Iași substantially vary across the year, starting from a modest 8.6 hours in December and increasing to a maximum of 15.9 hours in June. Correspondingly, sunshine hours also oscillate from a minimum of 1.8 hours in December, gradually augmenting to around 8.8 hours in July. The UV index concurs with this pattern, reaching its acme of 7 from June to August.

The best time to visit Iași

Those looking to take full advantage of warm temperatures and a considerable amount of sunshine are advised to visit Iași from June to August. During these months, the city hosts daytime high temperatures that vary from 25.3°C (77.5°F) to 26.8°C (80.2°F), offering ideal conditions for outdoor activities. Additionally, with the UV index maintaining a stable 7, tourists are recommended to pack ample sun protection gear, including hats, sunglasses, and sunscreen.

The worst time to visit Iași

It would be least favorable to visit Iași between December and February when the city experiences its harshest weather conditions. With the lowest temperatures plunging to -6.9°C (19.6°F) and the sparse daylight hours dropping to 8.6 hours in December, this period can prove challenging for tourists unaccustomed to such cold weather. Additionally, there's a significant increase in snowfall with amounts touching 143mm (5.63") in February, which can impact travel plans.

Spring weather in Iași

The Spring season in Iași, occurring from March to May, heralds the gradual increase in temperatures. Daytime highs rise from 8.1°C (46.6°F) in March to a welcoming 22.4°C (72.3°F) in May. The nighttime temperatures also experience a similar increase, starting from -0.8°C (30.6°F) in March to 10.4°C (50.7°F) in May. Rainfall also shows an increment during these months, from 31mm (1.22") to 63mm (2.48"). The longer daylight hours, increasing from 11.9 to 15.1 hours along with heightened sunshine hours from 4.1 to 7.6 hours, make Spring sunny and pleasant.

Summer weather in Iași

Balmy temperatures consistently mark the summers in Iași. From June to August, the city experiences temperatures reaching up to 26.8°C (80.2°F), accompanied by promising amounts of sunshine. Nighttime temperatures hover comfortably between 13.7°C (56.7°F) and 15°C (59°F), and heavy rainfall characterizes this season with amounts reaching up to 101mm (3.98") in June. However, despite the regular showers, the extended sunshine hours ensure the summer months remain bright and inviting.

Autumn weather in Iași

Autumn in Iași, spanning from September to November, brings a gradual decrease in temperature, from a summery 22.7°C (72.9°F) in September, dwindling to 8.4°C (47.1°F) in November. The rainfall too, follows a similar pattern, decreasing from 48mm (1.89") in September to a mere 35mm (1.38") in November. The daylight hours dwindle from a pleasant 12.6 hours in September to a substantially reduced 9.4 hours by the end of November. Correspondingly, with the drop in sunshine hours to 2.4 by November, the days turn shorter and darker.

Winter weather in Iași

Winter in Iași, unfolding from December to February, witnesses the lowest temperatures, with values dropping to -6.9°C (19.6°F) in the depths of winter. The city also sees varying degrees of snowfall, reaching its peak of 143mm (5.63") in February. The limited daylight hours from 8.6 hours to 9 hours, further add to the chilling, cold atmosphere. Despite the weather, the city dressed in a winter-white blanket, offers picturesque sights, making it a unique experience for those embracing the cold.

Weather in January

January in Iași, Romania, sees the chill of winter with the lowest average temperatures of the year, falling between -6.9°C (19.6°F) and -0.1°C (31.8°F). Snowy landscapes dominate with snowfall reaching 113mm (4.45"), one of the highest figures all year round. Weather in January »

Weather in February

As February progresses, Iași experiences a slight easing in temperatures when compared to January although the winter cold remains firm. Despite the slight rise, there is a notable increase in snowfall, reaching up to 143mm (5.63"). Weather in February »

Weather in March

In the city of Iași, the arrival of March slowly announces spring, making it warmer than February but still considerably cool. The snowfall begins to decline, down to 119mm (4.69") from February's high. Increasing daylight hours are a sign that the days are gradually getting longer. Weather in March »

Weather in April

April brings about a much more noticeable shift in the weather of Iași, Romania, with temperatures becoming milder. Notably, snow no longer holds its presence with the snowfall recorded at 69mm (2.72"), a significant decrease from March. Weather in April »

Weather in May

Come May, Iași enters late spring with considerably warmer weather than in April. Temperatures range from balmy 10.4°C (50.7°F) at night to warm 22.4°C (72.3°F) during the day. Rainfall is more pronounced, ushering in invigorating showers that keep the city verdant and lush. Weather in May »

Weather in June

The month of June marks the onset of summer in Iași with an increase in temperatures when compared to May. There is more than 15 hours of daylight, bringing long and bright days. This is the first month of the year not to witness any snowfall. Weather in June »

Weather in July

Hitting the midst of summer, July boasts the highest average temperatures in Iași, ranging from 15°C (59°F) to 26.8°C (80.2°F), and is warmer than June. The city witnesses a substantial amount of sunshine, estimated at 8.8 hours per day. Weather in July »

Weather in August

The city of Iași continues to enjoy the summer season in August with temperatures comparable to July and ranging from 14.3°C (57.7°F) to 26.6°C (79.9°F). Despite a slight drop in daylight hours, the sunshine duration remains consistent at 8.7 hours. Weather in August »

Weather in September

September ushers in autumn in Iași, Romania, with visibly cooler weather compared to August. The temperatures drop to a range of 10.7°C (51.3°F) to 22.7°C (72.9°F), making the days more comfortable. Shorter daylight hours and reduced sunshine hours signify the change of season. Weather in September »

Weather in October

As October progresses in Iași, the autumn season deepens, bringing cooler weather than in September. The shift from summer to autumn is more pronounced with leaf fall being rather heavy and rapid. Duller, shorter daylight hours and reduced duration of sunshine are noticeable. Weather in October »

Weather in November

November in Iași sees a significant drop in temperatures from October, getting closer to the winter cold. A resumption in snowfall is observable, accounting for 104mm (4.09") during the month. Short daylight hours and a decrease in sunshine duration mark the impending arrival of winter. Weather in November »

Weather in December

December welcomes the official start of winter in Iași, Romania, with colder temperatures than in November. Notable levels of snowfall, reaching 63mm (2.48"), create a festive atmosphere right on time for the Christmas celebration. Weather in December »

Frequently asked questions

What are the coldest months in Iași?

The coldest period in Iași tends to be January, when average temperatures fluctuate between a high of -0.1°C (31.8°F) and a low of -6.9°C (19.6°F).

How much does it rain in Iași?

Throughout the year, there are 80 rainfall days, and 589mm (23.19") of precipitation is accumulated.

When does it snow in Iași?

January through April, October through December are months with snowfall.

How much does it snow in Iași?

Throughout the year, in Iași, 618mm (24.33") of snow is accumulated.

What are the months with the lowest UV index in Iași?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Iași, Romania.

When does it snow the most in Iași?

February is the month with the most snowfall in Iași, Romania, with 143mm (5.63") of accumulated snow.

When it does not snow in Iași?

May through September are months without snowfall in Iași.

What is the wettest month in Iași?

The month with the most rainfall in Iași is June, when the rain falls for 9 days and typically aggregates up to 101mm (3.98") of precipitation.

When are the longest days in Iași?

June has the longest days of the year in Iași, with an average of 15h and 54min of daylight.

What are the months with the highest UV index in Iași?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Iași.

What is the hottest time of year in Iași?

July, with its average high-temperature of 26.8°C (80.2°F) and an average low-temperature of 15°C (59°F), holds the record as the warmest month in Iași, Romania.

What month has the most sunshine in Iași?

The month with the most sunshine in Iași is July, with an average of 8.8h of sunshine.

What is the driest month in Iași?

October is the month with the least rainfall in Iași, Romania. Rain falls for 5 days and accumulates 25mm (0.98") of precipitation.

When is Daylight Saving Time (DST) in Iași?

On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends, and the time zone changes from EEST to EET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 03:00, and the time zone reverts from EET to EEST.

What is the month with the shortest days in Iași?

With an average of 8h and 36min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Iași?

The month with the least sunshine in Iași, Romania, is December, with an average of 1.8h of sunshine.

Average rainfall
Iași, Romania

Average rainfall - Iași, Romania

The wettest month (with the highest rainfall) is June (101mm).
The driest month (with the least rainfall) is October (25mm).


Average rainfall days
Iași, Romania

Average rainfall days - Iași, Romania

The months with the highest number of rainy days are June and July (9 days).
The months with the least rainy days are August, September and October (5 days).


Average snowfall
Iași, Romania

Average snowfall - Iași, Romania

The month with the highest snowfall is February (143mm).
The months with the least snowfall are May, June, July, August and September (0mm).


Average daylight / Average sunshine
Iași, Romania

Average daylight / Average sunshine - Iași, Romania

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).

The month with the most sunshine is July (Average sunshine: 8h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).


Average UV index
Iași, Romania

Average UV index - Iași, Romania

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 1).


Iași, Romania

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