July
Other strong months: June and August
45/100 weather score
Iceland · 1991–2020
Best time to visit
Selfoss
For Selfoss, July has the most comfortable weather in our climate comparison. Typical daytime highs are 14.9°C, nights average 9.1°C, and rainfall totals about 66 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthJuly
Typical daytime high14.9°C
Typical night-time low9.1°C
July rainfall66 mm
July
Other strong months: January and February
8/100 weather score
July
Other strong months: June and August
64/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
2 months fit your choices for Selfoss
The lowest comfort score is 5 out of 100. January, February, March, April, October, November and December share that score. In January, that is mainly because days reach only 3.2°C, 21° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Selfoss?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Selfoss?
July is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 14.9°C and 66 mm of rain.
What is the hottest month in Selfoss?
July is hottest in this record, with a typical daytime high of 14.9°C and a night-time low of 9.1°C.
Which month has the least rain?
June has the lowest monthly rainfall total at 57 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 3.2°C | -1.7°C | 106 mm | 18.5 | 5.9°C | 5 h 23 | 5 | Strong coverage |
| February | 3.3°C | -1.9°C | 112 mm | 18.7 | 5.8°C | 8 h 25 | 5 | Strong coverage |
| March | 4.2°C | -1.3°C | 94 mm | 16.7 | 5.7°C | 11 h 27 | 5 | Strong coverage |
| April | 6.9°C | 1°C | 71 mm | 14.3 | 6.4°C | 14 h 53 | 5 | Strong coverage |
| May | 10.1°C | 4°C | 68 mm | 14 | 7.8°C | 18 h 14 | 20 | Strong coverage |
| June | 13°C | 7.2°C | 57 mm | 12.3 | 9.9°C | 20 h 51 | 38 | Strong coverage |
| July | 14.9°C | 9.1°C | 66 mm | 13.8 | 11.5°C | 19 h 39 | 45 | Strong coverage |
| August | 14.1°C | 8.6°C | 85 mm | 15.2 | 11.6°C | 16 h 21 | 38 | Strong coverage |
| September | 11.4°C | 6.2°C | 101 mm | 17.4 | 10.2°C | 12 h 53 | 21 | Strong coverage |
| October | 7.6°C | 2.7°C | 99 mm | 16.1 | 8.5°C | 9 h 36 | 5 | Strong coverage |
| November | 4.7°C | -0.1°C | 105 mm | 16.6 | 7.2°C | 6 h 22 | 5 | Strong coverage |
| December | 3.3°C | -1.6°C | 114 mm | 17.4 | 6.3°C | 4 h 19 | 5 | Strong coverage |
What has changed
Recent daytime highs are
1.3°C warmer in Selfoss.
Each bar shows the difference between the 2011–2025 average daytime high and the 1961–1990 average for the same month at the same station. A blank month does not have enough older observations for a reliable comparison.
Jan
+1.2
Feb
+1.2
Mar
+1.4
Apr
+1.8
May
+1.0
Jun
+1.3
Jul
+1.6
Aug
+1.5
Sep
+1.5
Oct
+1.1
Nov
+1.8
Dec
+0.6
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 10.7°C4 Jan 2013 | -19.7°C30 Jan 1971 | 33 mm6 Jan 2022 | 153 mm2006 · driest 27 mm in 2026 | 78 |
| February | 10.2°C25 Feb 2013 | -17.6°C7 Feb 1969 | 40 mm13 Feb 1953 | 174 mm1953 · driest 5 mm in 1966 | 78 |
| March | 13.0°C31 Mar 1965 | -16.4°C9 Mar 1969 | 37 mm6 Mar 1974 | 210 mm2022 · driest 2 mm in 1962 | 78 |
| April | 17.1°C30 Apr 2019 | -16.4°C1 Apr 1968 | 48 mm1 Apr 1989 | 150 mm2017 · driest 10 mm in 1950 | 78 |
| May | 20.6°C14 May 1960 | -7.7°C5 May 1982 | 39 mm1 May 2011 | 129 mm2018 · driest 9 mm in 1958 | 78 |
| June | 22.4°C11 Jun 2002 | -0.7°C7 Jun 1997 | 31 mm29 Jun 1977 | 116 mm2014 · driest 2 mm in 1971 | 78 |
| July | 25.7°C30 Jul 2008 | 1.4°C25 Jul 1963 | 39 mm12 Jul 1997 | 113 mm1984 · driest 12 mm in 2009 | 77 |
| August | 24.8°C11 Aug 2004 | -0.4°C27 Aug 1956 | 42 mm10 Aug 1984 | 149 mm1976 · driest 4 mm in 1956 | 77 |
| September | 18.5°C26 Sep 2019 | -4.4°C24 Sep 1974 | 49 mm26 Sep 1959 | 174 mm2008 · driest 15 mm in 1954 | 77 |
| October | 15.7°C1 Oct 1958 | -10.6°C27 Oct 1970 | 48 mm2 Oct 2000 | 207 mm2016 · driest 19 mm in 2013 | 77 |
| November | 12.9°C12 Nov 2024 | -15.1°C19 Nov 2004 | 48 mm18 Nov 2018 | 260 mm1993 · driest 10 mm in 2000 | 77 |
| December | 12.0°C14 Dec 1997 | -16.8°C28 Dec 1961 | 55 mm29 Dec 2012 | 197 mm2007 · driest 23 mm in 1976 | 77 |
| Month | Days 25°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 0 | 19 | 2 |
| February | 0 | 19 | 2 |
| March | 0 | 19 | 2 |
| April | 0 | 11 | 1 |
| May | 0 | 3 | 1 |
| June | 0 | 0 | <1 |
| July | 0 | 0 | 1 |
| August | 0 | 0 | 2 |
| September | 0 | <1 | 2 |
| October | 0 | 7 | 2 |
| November | 0 | 15 | 2 |
| December | 0 | 20 | 3 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 51% | 8% | 68% | 0.3–4.7°C |
| February | 0% | 53% | 8% | 68% | 1.0–5.2°C |
| March | 0% | 49% | 7% | 66% | 1.7–6.1°C |
| April | 0% | 44% | 4% | 58% | 4.2–8.2°C |
| May | 0% | 37% | 4% | 47% | 8.4–11.3°C |
| June | <1% | 37% | 3% | 47% | 10.9–13.9°C |
| July | 1% | 37% | 4% | 45% | 12.7–15.7°C |
| August | <1% | 41% | 6% | 54% | 12.6–15.1°C |
| September | 0% | 48% | 7% | 63% | 9.2–12.7°C |
| October | 0% | 50% | 8% | 68% | 5.8–8.8°C |
| November | 0% | 49% | 8% | 65% | 2.3–6.3°C |
| December | 0% | 51% | 8% | 66% | 0.9–4.9°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 3413604
- NOAA station
- IC000004030 · REYKJAVIK
- Station distance
- 49.1 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 26 usable years
- Daylight
- Calculated from latitude 63.93°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 9 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Selfoss is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work