July
Other strong months: August and June
80/100 weather score
The Netherlands · 1991–2020
Best time to visit
Leiden
For Leiden, July has the most comfortable weather in our climate comparison. Typical daytime highs are 22.7°C, nights average 13.4°C, and rainfall totals about 80 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthJuly
Typical daytime high22.7°C
Typical night-time low13.4°C
July rainfall80 mm
July
Other strong months: August and June
44/100 weather score
June
Other strong months: May and September
82/100 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.
3 months fit your choices for Leiden
The lowest comfort score is 5 out of 100. January and December share that score. In January, that is mainly because days reach only 6.4°C, 18° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Leiden?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Leiden?
July is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 22.7°C and 80 mm of rain.
What is the hottest month in Leiden?
July is hottest in this record, with a typical daytime high of 22.7°C and a night-time low of 13.4°C.
Which month has the least rain?
April has the lowest monthly rainfall total at 44 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 | 6.4°C | 1.3°C | 70 mm | 12.6 | 6.1°C | 8 h 12 | 5 | Strong coverage |
| February | 7.1°C | 1.1°C | 65 mm | 10.9 | 5.4°C | 9 h 49 | 8 | Strong coverage |
| March | 10.3°C | 2.7°C | 56 mm | 10 | 6.2°C | 11 h 41 | 23 | Strong coverage |
| April | 14.3°C | 4.8°C | 44 mm | 8.9 | 8.6°C | 13 h 49 | 43 | Strong coverage |
| May | 17.9°C | 8.1°C | 56 mm | 8.7 | 11.8°C | 15 h 40 | 59 | Strong coverage |
| June | 20.6°C | 11°C | 70 mm | 9.8 | 14.9°C | 16 h 44 | 70 | Strong coverage |
| July | 22.7°C | 13.4°C | 80 mm | 10.5 | 17.5°C | 16 h 18 | 80 | Strong coverage |
| August | 22.6°C | 13.2°C | 90 mm | 10.5 | 18.9°C | 14 h 40 | 78 | Strong coverage |
| September | 19.3°C | 10.7°C | 90 mm | 11.1 | 17.6°C | 12 h 35 | 62 | Strong coverage |
| October | 14.9°C | 7.6°C | 86 mm | 12.6 | 14.7°C | 10 h 32 | 41 | Strong coverage |
| November | 10.2°C | 4.4°C | 87 mm | 13.7 | 11.2°C | 8 h 41 | 19 | Strong coverage |
| December | 7.1°C | 1.9°C | 86 mm | 14 | 8.0°C | 7 h 45 | 5 | Strong coverage |
What has changed
Recent daytime highs are
1.9°C warmer in Leiden.
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
+1.9
Feb
+2.0
Mar
+2.2
Apr
+2.4
May
+1.7
Jun
+2.3
Jul
+2.0
Aug
+2.0
Sep
+1.7
Oct
+1.1
Nov
+1.5
Dec
+2.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 14.6°C1 Jan 2023 | -17.1°C7 Jan 1985 | 35 mm12 Jan 2023 | 159 mm1988 · driest 2 mm in 1997 | 70 |
| February | 18.7°C26 Feb 2019 | -16.5°C4 Feb 2012 | 31 mm20 Feb 2015 | 143 mm2002 · driest 1 mm in 1986 | 70 |
| March | 23.8°C29 Mar 1968 | -13.4°C4 Mar 2005 | 28 mm6 Mar 1998 | 129 mm2008 · driest 6 mm in 2025 | 70 |
| April | 27.5°C19 Apr 2018 | -6.0°C1 Apr 1996 | 34 mm30 Apr 2004 | 112 mm1998 · driest 0 mm in 2007 | 70 |
| May | 31.3°C27 May 2017 | -1.4°C6 May 1996 | 45 mm21 May 1981 | 130 mm1981 · driest 8 mm in 2020 | 70 |
| June | 36.6°C26 Jun 2026 | 0.5°C2 Jun 1991 | 101 mm23 Jun 1975 | 162 mm2016 · driest 5 mm in 2023 | 70 |
| July | 37.2°C25 Jul 2019 | 3.6°C19 Jul 1971 | 75 mm14 Jul 2011 | 185 mm2011 · driest 10 mm in 2022 | 69 |
| August | 34.9°C4 Aug 1990 | 4.6°C3 Aug 1974 | 55 mm10 Aug 1999 | 268 mm2006 · driest 10 mm in 2003 | 69 |
| September | 32.2°C15 Sep 2020 | 0.4°C16 Sep 1971 | 58 mm19 Sep 2001 | 254 mm2001 · driest 11 mm in 1977 | 69 |
| October | 26.0°C1 Oct 2011 | -5.1°C29 Oct 1997 | 46 mm4 Oct 1999 | 212 mm1982 · driest 17 mm in 1975 | 70 |
| November | 19.3°C6 Nov 2018 | -9.0°C16 Nov 1965 | 38 mm27 Nov 1983 | 182 mm1977 · driest 5 mm in 2011 | 70 |
| December | 15.1°C8 Dec 2000 | -13.3°C2 Dec 1973 | 39 mm30 Dec 1993 | 171 mm1993 · driest 14 mm in 2016 | 70 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 11 | 2 |
| February | 0 | 0 | 11 | 2 |
| March | 0 | 0 | 8 | 2 |
| April | <1 | 0 | 3 | <1 |
| May | 2 | <1 | <1 | 2 |
| June | 4 | <1 | 0 | 2 |
| July | 8 | 2 | 0 | 3 |
| August | 7 | 1 | 0 | 3 |
| September | 2 | <1 | 0 | 3 |
| October | <1 | 0 | 1 | 3 |
| November | 0 | 0 | 4 | 3 |
| December | 0 | 0 | 10 | 3 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 43% | 6% | 56% | 2.9–8.2°C |
| February | 0% | 35% | 5% | 48% | 3.8–9.8°C |
| March | <1% | 35% | 5% | 45% | 6.7–12.4°C |
| April | 8% | 29% | 3% | 37% | 11.1–16.2°C |
| May | 24% | 29% | 5% | 37% | 14.4–19.5°C |
| June | 38% | 32% | 7% | 41% | 18.0–22.5°C |
| July | 52% | 33% | 8% | 40% | 19.2–24.0°C |
| August | 57% | 32% | 8% | 44% | 19.7–24.0°C |
| September | 28% | 37% | 9% | 50% | 17.2–20.9°C |
| October | 5% | 40% | 10% | 53% | 12.8–16.9°C |
| November | 0% | 45% | 9% | 61% | 7.9–11.6°C |
| December | 0% | 44% | 7% | 62% | 3.5–8.8°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 2751773
- NOAA station
- NLE00152490 · ROTTERDAM
- Station distance
- 22.2 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 29 usable years
- Daylight
- Calculated from latitude 52.16°, 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 Leiden 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.
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