Annual mean 9°C · wettest around July · prevailing wind SW
Warmest
23.8 °C
Coldest
-1.1 °C
Wettest
19%
Windiest
4.6 m/s
Prevailing
SW
3.6 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Łomża over the whole year is 9°C. August is the hottest month, with highs of about 23°C; January is the coldest, with lows of about -2°C. Łomża has no sharply defined rainy season: the chance of rain on a given day runs from 9% in April, the driest month, to 15% in July, the wettest. Winds in Łomża are highest in December, averaging 3.4 m/s (12 km/h), and lightest in August, at 2.2 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Łomża come in August, when the sky is typically 55% covered; December is the cloudiest month, at 86%.
Month by month Łomża climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-0°C
-2°C
-5°C
14%
83%
3.3 m/s
0
0
2
February
2°C
-1°C
-3°C
14%
77%
3.2 m/s
0
0
4
March
6°C
0°C
2°C
9%
70%
2.9 m/s
0
0
19
April
12°C
5°C
8°C
9%
62%
3.1 m/s
17
1
54
May
17°C
10°C
14°C
12%
58%
2.7 m/s
48
3
78
June
22°C
15°C
21°C
11%
55%
2.6 m/s
77
25
63
July
23°C
16°C
21°C
15%
60%
2.5 m/s
76
27
58
August
23°C
16°C
22°C
12%
55%
2.2 m/s
76
33
54
September
19°C
11°C
16°C
10%
58%
2.4 m/s
60
10
77
October
12°C
7°C
9°C
14%
70%
2.9 m/s
16
0
64
November
5°C
3°C
1°C
11%
84%
3.0 m/s
0
0
19
December
2°C
0°C
-3°C
15%
86%
3.4 m/s
0
0
2
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Łomża weather by season
Year round, Łomża has days of about -0°C at their warmest in January, its coolest month, and 23°C in August, its warmest; the coolest hours of the day run from -2°C to 16°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around July and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Łomża weather in winterDecember to February
High 1°CLow -1°CRain 14%
Winter in Łomża has typical daily highs of about 1°C and lows of about -1°C, with a 14% chance of rain on a given day.
Łomża weather in springMarch to May
High 12°CLow 5°CRain 10%
Spring in Łomża has typical daily highs of about 12°C and lows of about 5°C, with a 10% chance of rain on a given day.
Łomża weather in summerJune to August
High 23°CLow 15°CRain 13%
Summer in Łomża has typical daily highs of about 23°C and lows of about 15°C, with a 13% chance of rain on a given day.
Łomża weather in autumnSeptember to November
High 12°CLow 7°CRain 12%
Autumn in Łomża has typical daily highs of about 12°C and lows of about 7°C, with a 12% chance of rain on a given day.
When is the rainy season in Łomża?
Łomża has no sharply defined rainy season: the chance of rain on a given day runs from 9% in April, the driest month, to 15% in July, the wettest.
What time of year is Łomża windiest?
Winds in Łomża are highest in December, averaging 3.4 m/s (12 km/h), and lightest in August, at 2.2 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Łomża year round?
The average temperature in Łomża over the whole year is 9°C. August is the hottest month, with highs of about 23°C; January is the coldest, with lows of about -2°C.