September
September · May · June
Ukraine · 1991–2020
September leads for comfortable weather in Kal'mius'ke: typically 22.9°C by day, 13.9°C at night, with 52 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
July · August · June
May · September · April
The weakest month is January, scoring 5 against September’s 90 — days reach only 0.2°C, 24° below the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 0.2°C | -4.5°C | 59 mm | 9.7 | 8 h 49 | 5 | Strong coverage |
| February | 1.3°C | -4.3°C | 48 mm | 8 | 10 h 10 | 5 | Strong coverage |
| March | 7.1°C | 0.5°C | 46 mm | 8.7 | 11 h 44 | 11 | Strong coverage |
| April | 15.5°C | 7.5°C | 40 mm | 6.8 | 13 h 33 | 54 | Strong coverage |
| May | 22.3°C | 13.7°C | 50 mm | 6.4 | 15 h 06 | 87 | Strong coverage |
| June | 27.1°C | 18°C | 59 mm | 6.3 | 15 h 58 | 78 | Strong coverage |
| July | 29.9°C | 20.2°C | 39 mm | 4.9 | 15 h 37 | 69 | Strong coverage |
| August | 29.5°C | 19.5°C | 36 mm | 3.9 | 14 h 16 | 73 | Strong coverage |
| September | 22.9°C | 13.9°C | 52 mm | 5.4 | 12 h 30 | 90 | Strong coverage |
| October | 14.8°C | 7.7°C | 43 mm | 6.4 | 10 h 45 | 52 | Strong coverage |
| November | 6.8°C | 1.6°C | 49 mm | 7 | 9 h 13 | 13 | Strong coverage |
| December | 1.7°C | -2.8°C | 57 mm | 8.7 | 8 h 26 | 5 | Strong coverage |
What has changed
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 13.2°C10 Jan 2025 | -32.0°C6 Jan 1935 | 35 mm16 Jan 2019 | 138 mm2019 · driest 0 mm in 1909 | 116 |
| February | 15.6°C24 Feb 1966 | -29.5°C2 Feb 1954 | 43 mm6 Feb 2020 | 125 mm2004 · driest 0 mm in 1905 | 116 |
| March | 22.0°C9 Mar 2020 | -23.7°C9 Mar 1929 | 28 mm10 Mar 2000 | 111 mm2009 · driest 1 mm in 2020 | 118 |
| April | 28.4°C30 Apr 1970 | -7.0°C8 Apr 1926 | 41 mm27 Apr 1939 | 101 mm1936 · driest 0 mm in 1918 | 112 |
| May | 35.8°C26 May 2007 | -0.9°C1 May 1940 | 71 mm28 May 1928 | 134 mm1992 · driest 0 mm in 1968 | 114 |
| June | 37.4°C16 Jun 1924 | 4.6°C2 Jun 1916 | 84 mm24 Jun 1989 | 183 mm2005 · driest 1 mm in 1957 | 112 |
| July | 40.3°C9 Jul 1938 | 9.2°C1 Jul 1953 | 94 mm3 Jul 1958 | 179 mm1958 · driest 0 mm in 2001 | 111 |
| August | 40.5°C7 Aug 2010 | 7.3°C30 Aug 1966 | 65 mm24 Aug 1952 | 145 mm1982 · driest 0 mm in 2008 | 111 |
| September | 35.6°C1 Sep 2010 | -0.2°C25 Sep 1956 | 72 mm9 Sep 1996 | 219 mm1996 · driest 0 mm in 1958 | 109 |
| October | 30.5°C3 Oct 1999 | -10.3°C30 Oct 1912 | 39 mm22 Oct 1957 | 146 mm1997 · driest 2 mm in 1985 | 111 |
| November | 22.7°C2 Nov 1932 | -20.9°C30 Nov 1931 | 62 mm5 Nov 1909 | 166 mm1909 · driest 1 mm in 2024 | 117 |
| December | 14.5°C1 Dec 2012 | -26.1°C14 Dec 1945 | 32 mm18 Dec 2005 | 145 mm1966 · driest 3 mm in 1920 | 116 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 24 | 2 |
| February | 0 | 0 | 22 | 1 |
| March | 0 | 0 | 12 | 1 |
| April | <1 | 0 | <1 | <1 |
| May | 9 | 1 | 0 | 2 |
| June | 20 | 8 | 0 | 2 |
| July | 29 | 15 | 0 | 2 |
| August | 28 | 14 | 0 | 1 |
| September | 10 | 1 | 0 | 2 |
| October | <1 | 0 | 2 | 1 |
| November | 0 | 0 | 10 | 2 |
| December | 0 | 0 | 21 | 2 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 89); on 2011–2025 it is May (97). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 29% | 4% | 36% | -4.9–2.5°C |
| February | 0% | 27% | 3% | 32% | -4.6–3.7°C |
| March | <1% | 24% | 3% | 26% | 1.4–9.1°C |
| April | 13% | 22% | 4% | 23% | 11.6–17.7°C |
| May | 56% | 19% | 4% | 21% | 19.4–24.8°C |
| June | 77% | 22% | 6% | 22% | 23.4–29.0°C |
| July | 82% | 18% | 6% | 16% | 26.6–31.6°C |
| August | 84% | 15% | 4% | 12% | 25.3–31.0°C |
| September | 63% | 16% | 4% | 15% | 19.3–24.6°C |
| October | 10% | 18% | 3% | 18% | 11.6–17.2°C |
| November | <1% | 23% | 4% | 27% | 3.9–8.8°C |
| December | 0% | 28% | 5% | 37% | -2.6–4.3°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page