Łomża Weather in September
Łomża in September
The short of it: Łomża in September averages a high of 19 °C (67 °F) and a low of 9 °C (48 °F), with 42 mm (1.7 in) of rain and about 12 h 35 min of daylight. Rated 5 of 5 for a visit; the best months are September and June. Source: TerraClimate climate normals, 1991–2020.
Average high 19° · low 9° · rain 42 mm · daylight 12 h 35 min
✦✦✦✦✦ Recommended for a visit · best months: September & June
Thirty years of records give Łomża an average September high of 19°, a low of 9° and some 42 mm of rain. The year turns hard here: highs drop 6° from August to about 19°, with nights near 9°. Rain is modest, about 42 mm, the 5th wettest month.
The sun is up for about 12 h 35 min in mid-September, 130 minutes less than a month before.
For the traveller: pack layers, a wool coat and stout boots. The Almanac rates September 5 of 5 for a visit; it is the best month of the year to come.
Against its neighbours, Łomża runs warmer than most and drier than most in September. Piątnica, 3 km to the NE, sees much the same highs.
September in Łomża, by the numbers
- Warmth rank
- 5th warmest of 12
- Rain rank
- 5th wettest of 12
- Versus August
- 6° colder, 17 mm less rain
- Versus October
- 7° warmer
- Day–night spread
- 11°
- Snow season
- Dec–Mar
- Daylight, mid-month
- 12 h 35 min
- Average wind
- 10 km/h