September
September · May · June
Bulgaria · 1991–2020
September leads for comfortable weather in Mizia: typically 24.7°C by day, 12.4°C at night, with 53 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
April · October · September
The weakest month is January, scoring 5 against September’s 89 — days reach only 3°C, 21° 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 | 3°C | -4.1°C | 43 mm | 6.6 | 9 h 16 | 5 | Strong coverage |
| February | 6.2°C | -2.3°C | 34 mm | 5.6 | 10 h 25 | 8 | Strong coverage |
| March | 12.1°C | 1.7°C | 46 mm | 6.4 | 11 h 47 | 32 | Strong coverage |
| April | 18.2°C | 6.7°C | 49 mm | 6.8 | 13 h 22 | 60 | Strong coverage |
| May | 23.6°C | 11.4°C | 68 mm | 9.1 | 14 h 41 | 82 | Strong coverage |
| June | 27.8°C | 15.1°C | 75 mm | 7.2 | 15 h 25 | 78 | Strong coverage |
| July | 30.2°C | 16.9°C | 73 mm | 6.4 | 15 h 08 | 68 | Strong coverage |
| August | 30.3°C | 16.9°C | 47 mm | 4.8 | 13 h 59 | 72 | Strong coverage |
| September | 24.7°C | 12.4°C | 53 mm | 5.4 | 12 h 27 | 89 | Strong coverage |
| October | 17.6°C | 7.4°C | 52 mm | 6 | 10 h 56 | 60 | Strong coverage |
| November | 9.9°C | 2.6°C | 48 mm | 6.2 | 9 h 36 | 26 | Strong coverage |
| December | 3.9°C | -2.5°C | 51 mm | 6.8 | 8 h 56 | 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 | 20.4°C29 Jan 2002 | -29.4°C25 Jan 1963 | 51 mm26 Jan 2012 | 109 mm2012 · driest 0 mm in 1989 | 66 |
| February | 21.7°C27 Feb 2021 | -22.6°C9 Feb 2012 | 35 mm10 Feb 1984 | 120 mm1986 · driest 1 mm in 2002 | 66 |
| March | 26.5°C31 Mar 2024 | -19.4°C5 Mar 1987 | 45 mm4 Mar 2016 | 144 mm2016 · driest 6 mm in 2002 | 66 |
| April | 31.8°C10 Apr 1985 | -3.9°C7 Apr 2003 | 78 mm13 Apr 2003 | 125 mm2014 · driest 0 mm in 2007 | 66 |
| May | 34.5°C16 May 1969 | 1.6°C13 May 1978 | 60 mm27 May 1990 | 181 mm1980 · driest 10 mm in 2000 | 65 |
| June | 39.2°C26 Jun 2025 | 4.4°C8 Jun 1962 | 73 mm23 Jun 1976 | 181 mm1989 · driest 2 mm in 2017 | 65 |
| July | 42.6°C24 Jul 2007 | 8.3°C7 Jul 1965 | 85 mm27 Jul 1972 | 183 mm1991 · driest 5 mm in 1965 | 65 |
| August | 40.8°C6 Aug 2017 | 6.4°C29 Aug 1981 | 56 mm16 Aug 2005 | 216 mm2005 · driest 1 mm in 2008 | 65 |
| September | 37.2°C15 Sep 1987 | -1.4°C30 Sep 1977 | 81 mm6 Sep 1968 | 161 mm2014 · driest 0 mm in 1970 | 65 |
| October | 32.6°C1 Oct 1991 | -6.0°C26 Oct 1979 | 54 mm5 Oct 2008 | 238 mm1972 · driest 0 mm in 1965 | 65 |
| November | 25.9°C2 Nov 2022 | -16.2°C19 Nov 1993 | 38 mm8 Nov 2004 | 154 mm1985 · driest 0 mm in 2011 | 65 |
| December | 18.4°C1 Dec 1961 | -22.6°C19 Dec 1997 | 54 mm4 Dec 2010 | 155 mm2014 · driest 1 mm in 2013 | 65 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 25 | 1 |
| February | 0 | 0 | 18 | 1 |
| March | <1 | 0 | 11 | 1 |
| April | 2 | <1 | 1 | 1 |
| May | 13 | 1 | 0 | 2 |
| June | 23 | 9 | 0 | 3 |
| July | 29 | 17 | 0 | 2 |
| August | 28 | 18 | 0 | 2 |
| September | 15 | 4 | 0 | 2 |
| October | 3 | <1 | 1 | 2 |
| November | 0 | 0 | 8 | 2 |
| December | 0 | 0 | 21 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 21% | 4% | 24% | -0.8–5.8°C |
| February | <1% | 22% | 3% | 24% | 0.7–9.8°C |
| March | 9% | 22% | 4% | 25% | 6.9–15.3°C |
| April | 32% | 24% | 5% | 27% | 15.5–20.6°C |
| May | 62% | 28% | 6% | 34% | 21.0–25.8°C |
| June | 73% | 26% | 8% | 29% | 25.1–29.6°C |
| July | 80% | 20% | 6% | 16% | 27.6–32.4°C |
| August | 84% | 16% | 5% | 14% | 26.6–32.3°C |
| September | 76% | 17% | 5% | 13% | 22.4–27.2°C |
| October | 34% | 16% | 4% | 16% | 15.0–20.8°C |
| November | 4% | 23% | 6% | 29% | 7.1–13.0°C |
| December | 0% | 22% | 5% | 26% | 0.6–6.6°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