July
July · August · June
82climate match
Sweden · 1991–2020
Best time to visit
Irsta.
July leads for comfortable weather in Irsta: typically 23°C by day, 12.9°C at night, with 72 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJuly
Typical high23°C
Typical low12.9°C
Rain in July72 mm
July
July · August · June
47climate match
June
June · September · August
86climate match
The weakest month is January, scoring 5 against July’s 82 — days reach only 0.2°C, 24° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
50.2° / -4.8°
Feb
50.6° / -5.3°
Mar
54.6° / -2.7°
Apr
3011.2° / 1.1°
May
5316.5° / 5.8°
Jun
6920.3° / 10.2°
Jul
8223° / 12.9°
Aug
7521.6° / 12.2°
Sep
5716.4° / 8.3°
Oct
259.9° / 3.9°
Nov
55° / 0.4°
Dec
51.7° / -3.1°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 0.2°C | -4.8°C | 37 mm | 8.5 | 6 h 45 | 5 | Strong coverage |
| February | 0.6°C | -5.3°C | 31 mm | 7 | 9 h 04 | 5 | Strong coverage |
| March | 4.6°C | -2.7°C | 27 mm | 6.8 | 11 h 33 | 5 | Strong coverage |
| April | 11.2°C | 1.1°C | 31 mm | 6.1 | 14 h 24 | 30 | Strong coverage |
| May | 16.5°C | 5.8°C | 41 mm | 8.4 | 17 h | 53 | Strong coverage |
| June | 20.3°C | 10.2°C | 63 mm | 9.6 | 18 h 39 | 69 | Strong coverage |
| July | 23°C | 12.9°C | 72 mm | 9.1 | 17 h 58 | 82 | Strong coverage |
| August | 21.6°C | 12.2°C | 72 mm | 10.1 | 15 h 34 | 75 | Strong coverage |
| September | 16.4°C | 8.3°C | 45 mm | 7.9 | 12 h 45 | 57 | Strong coverage |
| October | 9.9°C | 3.9°C | 56 mm | 9.3 | 10 h 01 | 25 | Strong coverage |
| November | 5°C | 0.4°C | 53 mm | 10.4 | 7 h 28 | 5 | Strong coverage |
| December | 1.7°C | -3.1°C | 48 mm | 10.7 | 6 h 02 | 5 | Strong coverage |
What has changed
Irsta runs +1.7°C
on the 1961–1990 baseline.
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.
Jan
+1.8
Feb
+2.6
Mar
+2.8
Apr
+2.5
May
+1.1
Jun
+0.4
Jul
+1.3
Aug
+1.2
Sep
+1.8
Oct
+0.8
Nov
+1.7
Dec
+2.0
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 11.0°C25 Jan 1882 | -31.0°C14 Jan 1918 | 23 mm29 Jan 1966 | 90 mm2015 · driest 4 mm in 1964 | 142 |
| February | 12.4°C28 Feb 2021 | -31.8°C16 Feb 1979 | 28 mm16 Feb 2024 | 73 mm1904 · driest 1 mm in 1947 | 142 |
| March | 19.4°C26 Mar 2017 | -28.0°C6 Mar 1888 | 25 mm11 Mar 1908 | 90 mm1909 · driest 0 mm in 2013 | 142 |
| April | 25.9°C27 Apr 1993 | -17.2°C1 Apr 1944 | 26 mm18 Apr 1921 | 87 mm1890 · driest 1 mm in 1902 | 142 |
| May | 29.5°C16 May 1894 | -6.0°C1 May 1918 | 40 mm17 May 1958 | 119 mm2021 · driest 3 mm in 1956 | 142 |
| June | 35.0°C30 Jun 1947 | -1.4°C8 Jun 1941 | 48 mm22 Jun 1886 | 131 mm2012 · driest 5 mm in 1969 | 142 |
| July | 36.0°C9 Jul 1933 | 2.0°C8 Jul 1908 | 93 mm21 Jul 1984 | 173 mm2000 · driest 3 mm in 1904 | 141 |
| August | 35.2°C7 Aug 1975 | 0.0°C25 Aug 1889 | 88 mm25 Aug 1996 | 203 mm2023 · driest 8 mm in 1983 | 141 |
| September | 27.8°C5 Sep 2024 | -7.0°C30 Sep 2001 | 52 mm16 Sep 1972 | 192 mm1983 · driest 7 mm in 2000 | 142 |
| October | 21.0°C3 Oct 1898 | -12.0°C30 Oct 1911 | 35 mm31 Oct 1968 | 119 mm2006 · driest 0 mm in 1920 | 142 |
| November | 15.9°C3 Nov 2020 | -19.0°C30 Nov 1904 | 33 mm9 Nov 2010 | 124 mm1944 · driest 6 mm in 1892 | 142 |
| December | 12.1°C20 Dec 2015 | -27.0°C26 Dec 1927 | 32 mm17 Dec 1955 | 116 mm1966 · driest 5 mm in 1933 | 143 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 25 | <1 |
| February | 0 | 0 | 23 | <1 |
| March | 0 | 0 | 22 | <1 |
| April | <1 | 0 | 12 | <1 |
| May | 1 | 0 | 2 | 1 |
| June | 4 | <1 | 0 | 2 |
| July | 9 | 1 | 0 | 3 |
| August | 5 | <1 | 0 | 2 |
| September | <1 | 0 | <1 | 1 |
| October | 0 | 0 | 6 | 2 |
| November | 0 | 0 | 13 | 1 |
| December | 0 | 0 | 21 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 26% | 1% | 31% | -3.8–2.6°C |
| February | 0% | 23% | 1% | 25% | -4.5–3.2°C |
| March | 0% | 20% | 1% | 20% | 0.7–7.0°C |
| April | 2% | 22% | 2% | 23% | 6.8–12.3°C |
| May | 22% | 24% | 3% | 28% | 13.8–18.6°C |
| June | 46% | 28% | 5% | 34% | 18.3–23.2°C |
| July | 59% | 30% | 7% | 39% | 20.4–25.4°C |
| August | 46% | 32% | 6% | 42% | 18.8–23.5°C |
| September | 10% | 28% | 5% | 35% | 13.9–17.5°C |
| October | <1% | 28% | 4% | 35% | 7.3–11.4°C |
| November | 0% | 30% | 3% | 37% | 1.6–6.3°C |
| December | 0% | 29% | 2% | 36% | -2.4–3.8°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
Nearby, measured,
and named.
- Place identity
- GeoNames 2703526
- NOAA station
- SWE00139028 · VASTERAS-HASSLO
- Station distance
- 4.1 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 59.60°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.