June
June · July · August
United States · 1991–2020
June leads for comfortable weather in Oslo: typically 24.7°C by day, 10.9°C at night, with 100 mm of rain. Based on measured 1991–2020 NOAA station history.
June · July · August
July · August · June
September · May · June
The weakest month is January, scoring 5 against June’s 75 — days reach only -9.5°C, 33° 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 | -9.5°C | -20.4°C | 17 mm | 4.2 | 8 h 45 | 5 | Strong coverage |
| February | -6.3°C | -18.7°C | 15 mm | 3.6 | 10 h 07 | 5 | Strong coverage |
| March | 1.5°C | -10.7°C | 23 mm | 3.9 | 11 h 44 | 5 | Strong coverage |
| April | 11.5°C | -2.1°C | 29 mm | 4.5 | 13 h 35 | 27 | Strong coverage |
| May | 19.6°C | 4.6°C | 78 mm | 8.1 | 15 h 10 | 56 | Strong coverage |
| June | 24.7°C | 10.9°C | 100 mm | 9.5 | 16 h 03 | 75 | Strong coverage |
| July | 27.3°C | 12.8°C | 77 mm | 8 | 15 h 42 | 75 | Strong coverage |
| August | 27.1°C | 11.4°C | 77 mm | 6.6 | 14 h 19 | 74 | Strong coverage |
| September | 21.8°C | 6.7°C | 63 mm | 6.2 | 12 h 31 | 71 | Strong coverage |
| October | 12.8°C | 0°C | 50 mm | 6.3 | 10 h 44 | 31 | Strong coverage |
| November | 2.1°C | -7.9°C | 26 mm | 4.1 | 9 h 09 | 5 | Strong coverage |
| December | -5.9°C | -15.7°C | 22 mm | 5.1 | 8 h 22 | 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 | 8.9°C10 Jan 2012 | -41.7°C20 Jan 1996 | 18 mm3 Jan 2004 | 77 mm1969 · driest 0 mm in 1963 | 67 |
| February | 16.7°C26 Feb 1958 | -44.4°C1 Feb 1996 | 25 mm26 Feb 2000 | 50 mm2019 · driest 0 mm in 2002 | 70 |
| March | 23.9°C20 Mar 2012 | -38.9°C3 Mar 1972 | 37 mm27 Mar 1950 | 66 mm1950 · driest 0 mm in 1966 | 69 |
| April | 36.7°C22 Apr 1980 | -27.8°C6 Apr 1979 | 35 mm21 Apr 1974 | 95 mm2014 · driest 0 mm in 1980 | 70 |
| May | 36.7°C16 May 1987 | -7.8°C2 May 1967 | 108 mm12 May 2004 | 173 mm2004 · driest 2 mm in 1958 | 69 |
| June | 37.8°C18 Jun 1995 | -3.3°C1 Jun 1964 | 69 mm9 Jun 1963 | 191 mm1998 · driest 11 mm in 1961 | 68 |
| July | 40.6°C6 Jul 1988 | 2.8°C1 Jul 2001 | 120 mm2 Jul 1975 | 166 mm1948 · driest 8 mm in 2017 | 70 |
| August | 40.0°C8 Aug 1983 | -1.1°C27 Aug 1982 | 152 mm17 Aug 2006 | 240 mm2002 · driest 8 mm in 1958 | 70 |
| September | 37.8°C3 Sep 1983 | -7.2°C22 Sep 1974 | 75 mm16 Sep 2017 | 164 mm2010 · driest 4 mm in 1948 | 70 |
| October | 33.3°C2 Oct 1992 | -15.6°C23 Oct 1976 | 50 mm9 Oct 1997 | 126 mm2007 · driest 3 mm in 1952 | 70 |
| November | 23.9°C1 Nov 1999 | -36.7°C28 Nov 1985 | 36 mm19 Nov 1998 | 98 mm2008 · driest 0 mm in 1990 | 69 |
| December | 12.2°C3 Dec 1982 | -37.8°C31 Dec 1967 | 21 mm26 Dec 2009 | 51 mm2009 · driest 0 mm in 1979 | 70 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 7 |
| February | 0 | 0 | 28 | <1 | 6 |
| March | 0 | 0 | 29 | <1 | 4 |
| April | <1 | <1 | 21 | <1 | 1 |
| May | 7 | 2 | 7 | 2 | <1 |
| June | 16 | 4 | 0 | 3 | 0 |
| July | 24 | 8 | 0 | 2 | 0 |
| August | 23 | 8 | <1 | 2 | 0 |
| September | 10 | 3 | 3 | 2 | 0 |
| October | 1 | <1 | 16 | 1 | <1 |
| November | 0 | 0 | 28 | <1 | 4 |
| December | 0 | 0 | 31 | <1 | 8 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 15% | 1% | 11% | -15.3–-5.8°C |
| February | 0% | 13% | <1% | 8% | -11.2–-1.9°C |
| March | <1% | 13% | 2% | 9% | -3.7–4.5°C |
| April | 12% | 15% | 3% | 14% | 5.9–15.2°C |
| May | 42% | 24% | 6% | 29% | 15.9–22.2°C |
| June | 61% | 30% | 10% | 37% | 22.3–27.2°C |
| July | 73% | 25% | 8% | 24% | 25.5–29.3°C |
| August | 75% | 22% | 6% | 22% | 24.3–29.4°C |
| September | 49% | 20% | 6% | 18% | 18.5–23.5°C |
| October | 15% | 17% | 4% | 16% | 11.0–15.6°C |
| November | <1% | 13% | 2% | 9% | -2.1–5.2°C |
| December | 0% | 14% | 1% | 9% | -11.8–-2.6°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