July
July · August · June
Finland · 1991–2020
July leads for comfortable weather in Hollola: typically 23.1°C by day, 11.6°C at night, with 70 mm of rain. Based on measured 1991–2020 NOAA station history.
July · August · June
July · August · June
June · August · July
The weakest month is January, scoring 5 against July’s 80 — days reach only -3°C, 27° 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 | -9.1°C | 46 mm | 11.8 | 6 h 23 | 5 | Strong coverage |
| February | -2.9°C | -9.8°C | 35 mm | 9.4 | 8 h 52 | 5 | Strong coverage |
| March | 2.1°C | -6.8°C | 31 mm | 7.8 | 11 h 32 | 5 | Strong coverage |
| April | 9.1°C | -1.4°C | 29 mm | 6.9 | 14 h 32 | 18 | Strong coverage |
| May | 16.3°C | 3.7°C | 41 mm | 7.8 | 17 h 20 | 49 | Strong coverage |
| June | 20.1°C | 8.5°C | 67 mm | 9.4 | 19 h 12 | 65 | Strong coverage |
| July | 23.1°C | 11.6°C | 70 mm | 9.8 | 18 h 25 | 80 | Strong coverage |
| August | 21.1°C | 10.1°C | 70 mm | 9.6 | 15 h 47 | 71 | Strong coverage |
| September | 15.2°C | 5.7°C | 53 mm | 9.3 | 12 h 47 | 46 | Strong coverage |
| October | 7.9°C | 1.1°C | 63 mm | 10.7 | 9 h 54 | 11 | Strong coverage |
| November | 2.4°C | -2.3°C | 58 mm | 11.3 | 7 h 09 | 5 | Strong coverage |
| December | -1°C | -6.2°C | 50 mm | 12.1 | 5 h 35 | 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 | 7.5°C10 Jan 2007 | -35.2°C10 Jan 1987 | 21 mm1 Jan 1962 | 87 mm1984 · driest 9 mm in 1972 | 59 |
| February | 9.6°C23 Feb 1990 | -35.6°C1 Feb 1967 | 19 mm12 Feb 1962 | 79 mm1990 · driest 2 mm in 1994 | 59 |
| March | 16.6°C27 Mar 2007 | -31.4°C19 Mar 1963 | 18 mm18 Mar 1961 | 64 mm1988 · driest 5 mm in 1969 | 59 |
| April | 24.2°C29 Apr 1998 | -19.3°C1 Apr 1963 | 32 mm11 Apr 1982 | 93 mm1982 · driest 4 mm in 2004 | 59 |
| May | 30.1°C30 May 1995 | -7.0°C2 May 1995 | 43 mm28 May 1970 | 87 mm1995 · driest 3 mm in 1978 | 58 |
| June | 32.1°C26 Jun 1999 | -2.6°C18 Jun 1978 | 58 mm13 Jun 1981 | 130 mm1981 · driest 13 mm in 1964 | 58 |
| July | 35.0°C28 Jul 2010 | 1.5°C8 Jul 1964 | 43 mm15 Jul 2000 | 189 mm2000 · driest 11 mm in 2010 | 58 |
| August | 33.8°C8 Aug 2010 | -2.0°C29 Aug 1966 | 64 mm7 Aug 1984 | 193 mm1972 · driest 8 mm in 1996 | 58 |
| September | 26.8°C6 Sep 1968 | -8.4°C30 Sep 1993 | 43 mm12 Sep 1962 | 170 mm1962 · driest 19 mm in 1993 | 58 |
| October | 18.8°C14 Oct 2018 | -16.5°C22 Oct 2002 | 31 mm9 Oct 1973 | 138 mm2006 · driest 14 mm in 1979 | 58 |
| November | 13.2°C3 Nov 2015 | -23.8°C29 Nov 1995 | 28 mm19 Nov 2002 | 136 mm1996 · driest 6 mm in 1993 | 58 |
| December | 10.4°C20 Dec 2015 | -33.1°C17 Dec 1978 | 31 mm18 Dec 1966 | 102 mm2017 · driest 10 mm in 1978 | 58 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 28 | <1 |
| February | 0 | 0 | 26 | <1 |
| March | 0 | 0 | 28 | <1 |
| April | 0 | 0 | 18 | <1 |
| May | 2 | 0 | 6 | 1 |
| June | 5 | <1 | <1 | 2 |
| July | 10 | 2 | 0 | 2 |
| August | 5 | <1 | 0 | 2 |
| September | <1 | 0 | 3 | 1 |
| October | 0 | 0 | 13 | 2 |
| November | 0 | 0 | 19 | 1 |
| December | 0 | 0 | 25 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 36% | 1% | 49% | -9.0–-0.5°C |
| February | 0% | 31% | 1% | 40% | -8.0–1.2°C |
| March | 0% | 26% | 1% | 32% | -1.4–3.7°C |
| April | 2% | 24% | 1% | 27% | 5.5–10.9°C |
| May | 20% | 24% | 3% | 28% | 13.3–18.6°C |
| June | 40% | 30% | 6% | 37% | 17.9–22.8°C |
| July | 55% | 33% | 8% | 42% | 19.9–25.4°C |
| August | 40% | 34% | 8% | 47% | 17.8–22.8°C |
| September | 7% | 35% | 5% | 46% | 11.9–16.7°C |
| October | 0% | 36% | 6% | 48% | 5.6–9.9°C |
| November | 0% | 41% | 4% | 55% | -0.9–4.8°C |
| December | 0% | 40% | 2% | 53% | -6.0–2.2°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