Bacău, Romania climate

Cfb Oceanic / temperate

Bacău has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 29°C, while the coldest is January averaging around −6°C at night. Precipitation totals about 619 mm a year and is strongly seasonal — June alone averages 99 mm while January barely receives 24 mm.

☀️ Summers

Warm

Highs near 29°C in July.

About 15 days a year above 32 °C

❄️ Winters

Cold

Lows near −6°C in January.

About 111 freezing nights a year

🌧️ Rain

Moderate rainfall

About 619 mm of rain a year.

Wettest in June

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

+0.9 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Bacău climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	2	4	10	17	23	27	29	28	23	16	9	3
Avg temp (°C)	−2	0	5	11	16	20	22	22	17	11	5	−1
Avg low (°C)	−6	−4	0	5	10	14	15	15	10	5	1	−4
Precipitation (mm)	24	25	33	50	72	99	97	49	52	51	33	32

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	2	4	10	17	23	27
Avg temp (°C)	−2	0	5	11	16	20
Avg low (°C)	−6	−4	0	5	10	14
Precipitation (mm)	24	25	33	50	72	99

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	29	28	23	16	9	3
Avg temp (°C)	22	22	17	11	5	−1
Avg low (°C)	15	15	10	5	1	−4
Precipitation (mm)	97	49	52	51	33	32

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	10	11	11	11	12	13	12	9	8	9	10	11
Days with high ≥ 32°C (days)	—	—	—	0.0	0.4	3	6	6	0.6	—	—	—
Days with low ≤ 0°C (days)	28	22	16	3	0.1	—	—	—	0.2	4	13	25

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	10	11	11	11	12	13
Days with high ≥ 32°C (days)	—	—	—	0.0	0.4	3
Days with low ≤ 0°C (days)	28	22	16	3	0.1	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	12	9	8	9	10	11
Days with high ≥ 32°C (days)	6	6	0.6	—	—	—
Days with low ≤ 0°C (days)	—	—	0.2	4	13	25

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	68	71	68	67	64	60	53	48	57	62	69	70
Clear days (≤ 30% cloud)	3	3	4	5	5	5	8	11	7	6	4	3
Partly cloudy days (30–70%)	11	9	10	8	10	11	14	11	10	10	9	10
Cloudy days (≥ 70%)	17	17	17	17	15	13	10	9	12	15	17	18
Relative humidity (%)	88	84	76	71	67	65	61	59	64	74	84	88
Wind speed (m/s)	1.9	2.0	2.1	1.9	1.7	1.6	1.5	1.5	1.6	1.5	1.6	1.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	68	71	68	67	64	60
Clear days (≤ 30% cloud)	3	3	4	5	5	5
Partly cloudy days (30–70%)	11	9	10	8	10	11
Cloudy days (≥ 70%)	17	17	17	17	15	13
Relative humidity (%)	88	84	76	71	67	65
Wind speed (m/s)	1.9	2.0	2.1	1.9	1.7	1.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	53	48	57	62	69	70
Clear days (≤ 30% cloud)	8	11	7	6	4	3
Partly cloudy days (30–70%)	14	11	10	10	9	10
Cloudy days (≥ 70%)	10	9	12	15	17	18
Relative humidity (%)	61	59	64	74	84	88
Wind speed (m/s)	1.5	1.5	1.6	1.5	1.6	1.6

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Bacau, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →