Photo: Arkadiusz Zarzecki · CC BY-SA 3.0 · Wikimedia Commons
ŁomżaReport this photo · linked, not stored
ŁomżaReport this photo · linked, not stored
Climate guideThirty-year normals for Łomża
Łomża climate by month
Warm-summer humid continental · DfbBest May · Aug–Sep
Annual mean8°day and night
Seasonal swing21°warmest vs coolest
Precipitation590 mm141 wet days a year
53.18° N, 22.06° EElevation 103 mUTC+1 · Central European Standard Time
When to goŁomża · weather score
Best timeMay · Aug–Sep
October: high / low12° / 4°
iSummary
What the weather is like
Łomża has a warm-summer humid continental climate (Köppen Dfb): warm summers, cold winters and precipitation in every season.
The warmest month is July, when afternoons average 25° and nights 13°. January is the coolest month, with highs of 0° and lows of -5°. The difference between the warmest and the coolest month is about 21°, a large swing typical of continental interiors.
About 590 mm of precipitation falls in an average year. July is the wettest month (72 mm, 15 wet days) and April the driest (35 mm, 9 wet days). Cloud cover ranges from 33% in August to 62% in December.
Compared with Warsaw, the capital, Łomża is 0.6° cooler on a July afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 25° · July
- Coldest nights
- -5° · January
- Wettest month
- July
- Driest month
- April
- Clearest skies
- August · 33% cloud
- Longest day
- 16 h 56 min
- Shortest day
- 7 h 34 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 0° | 2° | 6° | 14° | 20° | 22° | 25° | 24° | 19° | 12° | 6° | 1° |
| Average low | -5° | -4° | -2° | 3° | 7° | 11° | 13° | 12° | 8° | 4° | 1° | -3° |
| Precipitation | 33 mm | 28 mm | 36 mm | 35 mm | 62 mm | 75 mm | 72 mm | 67 mm | 59 mm | 40 mm | 43 mm | 40 mm |
| Wet days (≥1 mm) | 12.6 | 10 | 10.2 | 8.8 | 13.7 | 13.7 | 15.2 | 12.6 | 9.9 | 11.1 | 12.4 | 11.2 |
| Cloud cover | 60% | 57% | 49% | 41% | 36% | 38% | 34% | 33% | 42% | 45% | 59% | 62% |
| Daylight | 8h 05 | 9h 51 | 11h 47 | 13h 57 | 15h 50 | 16h 56 | 16h 29 | 14h 49 | 12h 45 | 10h 40 | 8h 42 | 7h 34 |
| Month score | 16 | 23 | 26 | 53 | 65 | 64 | 65 | 69 | 72 | 36 | 17 | 18 |
ivMonth by month
Łomża in every month
January16
0° / -5°
33 mm · 12.6 wet days
February23
2° / -4°
28 mm · 10 wet days
March26
6° / -2°
36 mm · 10.2 wet days
April53
14° / 3°
35 mm · 8.8 wet days
May65
20° / 7°
62 mm · 13.7 wet days
June64
22° / 11°
75 mm · 13.7 wet days
July65
25° / 13°
72 mm · 15.2 wet days
August69
24° / 12°
67 mm · 12.6 wet days
September72
19° / 8°
59 mm · 9.9 wet days
October36
12° / 4°
40 mm · 11.1 wet days
November17
6° / 1°
43 mm · 12.4 wet days
December18
1° / -3°
40 mm · 11.2 wet days