Best time to visit Luxembourg City
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Luxembourg City
7 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Luxembourg City).
- 1
Luxembourg 1-day private guided country tour - 2
Luxembourg & Belgium 1-day private guided WW2 tour - 3
Private Luxembourg: Discover the City with an Expert Guide - 4
Luxembourg city walking and wine tasting tour - 5
Luxembourg tour in Spanish : History and Charm - 6
Luxembourg Challenges EVG EVJF City Challenge team - 7
Luxembourg City private guided walking, food & wine tasting tour
Last refreshed 2026-06-06.
Similar climatesHamburg94% · Cologne94% · Ghent94%
Other destinations with the most-alike year-round climate to Luxembourg City (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Luxembourg City's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 0–5 | 1 | 13 | 183 | 14.1 | 85% | 22 | 69 | 1 | Quiet | 3 |
| Feb | 2–8 | 4 | 15 | 196 | 13.1 | 79% | 25 | 103 | 1 | Quiet | 3 |
| Mar | 2–10 | 7 | 13 | 176 | 13.5 | 69% | 21 | 174 | 2 | Quiet | 5 |
| Apr | 4–13 | 10 | 10 | 135 | 13.5 | 61% | 20 | 220 | 3 | Quiet | 6 |
| May | 8–17 | 15 | 13 | 154 | 11.8 | 62% | 19 | 259 | 4 | Quiet | 7 |
| Jun | 13–22 | 21 | 11 | 120 | 10.9 | 58% | 17 | 264 | 6 | Quiet | 8 |
| Jul | 13–23 | 22 | 11 | 132 | 12.0 | 58% | 19 | 268 | 5 | Quiet | 8 |
| Aug | 15–24 | 23 | 11 | 122 | 11.1 | 60% | 18 | 258 | 5 | Busy | 8 |
| Sep | 11–20 | 19 | 10 | 123 | 12.3 | 65% | 17 | 215 | 4 | Moderate | 8 |
| Oct | 8–15 | 13 | 15 | 172 | 11.5 | 78% | 20 | 142 | 2 | Moderate | 5 |
| Nov | 4–9 | 5 | 14 | 168 | 12.0 | 85% | 20 | 86 | 1 | Peak | 4 |
| Dec | 2–6 | 2 | 16 | 206 | 12.9 | 89% | 20 | 48 | 1 | Peak | 3 |
UV Index in Luxembourg City by Month
UV index in Luxembourg City peaks at 6 (moderate) in June, dropping to 1 (low) in January.
Best months in detail
June
8/1013–22°C (feels 21°C) · 11 rain days (120h) · 264 sun hours · 58% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (high)
July
8/1013–23°C · 11 rain days (132h) · 268 sun hours · 58% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
August
8/1015–24°C · 11 rain days (122h) · 258 sun hours · 60% humidity · Busy crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
Every month
Show the other 9 months in detail
January
3/100–5°C (feels 1°C) · 13 rain days (183h) · 69 sun hours · 85% humidity · Quiet crowd · UV 1 (low)
February
3/102–8°C (feels 4°C) · 15 rain days (196h) · 103 sun hours · 79% humidity · Quiet crowd · UV 1 (low)
March
5/102–10°C (feels 7°C) · 13 rain days (176h) · 174 sun hours · 69% humidity · Quiet crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
April
6/104–13°C (feels 10°C) · 10 rain days (135h) · 220 sun hours · 61% humidity · Quiet crowd · UV 3 (moderate) · sunniest 1 in 10 days reach 5 (moderate)
May
7/108–17°C (feels 15°C) · 13 rain days (154h) · 259 sun hours · 62% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (high)
September
8/1011–20°C (feels 19°C) · 10 rain days (123h) · 215 sun hours · 65% humidity · Moderate crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 5 (moderate)
October
5/108–15°C (feels 13°C) · 15 rain days (172h) · 142 sun hours · 78% humidity · Moderate crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
November
4/104–9°C (feels 5°C) · 14 rain days (168h) · 86 sun hours · 85% humidity · Peak crowd · UV 1 (low)
December
3/102–6°C (feels 2°C) · 16 rain days (206h) · 48 sun hours · 89% humidity · Peak crowd · UV 1 (low)
Frequently asked questions about visiting Luxembourg City
When is the best time to visit Luxembourg City?
June is the highest-scoring month (8/10 on the Holiday Climate Index). Typical conditions: 13–22°C (11 rainy days). The top three months by score are June, July, August.
What is the worst time to visit Luxembourg City?
December is the lowest-scoring month (3/10). Typical conditions: 2–6°C (16 rainy days).
When are crowds lowest in Luxembourg City?
Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Luxembourg City have good weather but fewer tourists?
June (climate 8/10, crowd index 0) and July (climate 8/10, crowd index 5) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Luxembourg City by month?
UV peaks at 6 (moderate) in June and is lowest in January at 1 (low). Monthly peak values: Jan 1, Feb 1, Mar 2, Apr 3, May 4, Jun 6, Jul 5, Aug 5, Sep 4, Oct 2, Nov 1, Dec 1.
What is the UV index in Luxembourg City in June?
June is the peak UV month in Luxembourg City, with a daily-peak UV index of 6 (moderate). Standard sun protection — sunglasses and light SPF — is recommended.
How high can UV get in Luxembourg City on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 6 (moderate), but the top 10% of days reach UV 8 (high) — and even higher. Months where the sunniest days routinely exceed the typical reading: March, April, May, June, July, August, September, October. Plan sun protection for the worst case, not the average.
Is air quality in Luxembourg City bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 4 months: January, February, March, December. The worst month is March with a typical-day mean of 11 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 20 µg/m³ (unhealthy for sensitive) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.