Luxembourg Luxembourg Weather in August — Climate Guide
August in Luxembourg is very-high
Luxembourg Weather in August — Quick Answer
As of 2026- Avg temp
- 24° / 14°
- Rainfall
- 75mm · 12 days
- Crowds
- Busy
As of 2026, Luxembourg in August averages a high of 24°C and low of 14°C with 75mm of rain over about 12 days. Late summer — daytime 24°C / 75°F, nighttime 14°C / 57°F + occasional heatwaves. T-shirt + light layers + sunglasses + hat + sunscreen + comfortable walking shoes. Schueberfouer funfair attire (casual + comfortable for crowded fairgrounds).
August is very-high for Luxembourg.
August opens with EU institution summer recess (reduced business midweek surge) and closes with the canonical Schueberfouer funfair opening late August on Place de la Constitution — the EU's oldest annual market (established 1340 by Grand Duke John the Blind, the same sovereign in Notre-Dame Cathedral's crypt).
The Schueberfouer runs late August through mid-September — 4 weeks of carnival rides + traditional Gromperekichelcher (potato pancakes) + Bofferding draft + Luxembourg Crémant + atmospheric medieval-meets-modern fairground. Hotel rates surge +25-35% across the Schueberfouer overlap. Book 4-6 weeks ahead for late August through mid-September stays.
Travel score
Schueberfouer funfair opens — 270-year-old EU's oldest market + late summer + canonical Luxembourg festival
August Weather at a Glance
August averages 75°F / 24°C highs and 57°F / 14°C lows with 12 rainy days and 75mm of rain. Humidity 70%, UV 6, sunshine 7.5 hours. Late summer with Schueberfouer prep.
August Travel Advice
Book Schueberfouer-overlap stays (late August through mid-September) 4-6 weeks ahead. Mosel valley winery tastings 2-3 weeks ahead (harvest prep tightens schedules). Bring comfortable shoes for fairground walking.
August Pricing Trends
High pricing with Schueberfouer surge: boutique EUR 200-320/night / $216-346, 4-star EUR 260-420 / $281-454, 5-star EUR 360-600 / $389-648. Schueberfouer overlap +25-35%.
Luxembourg August Weather Stats
Avg High
24°C
Avg Low
14°C
Rainy Days
12
75mm total
Sunshine
7.5h
Daily avg
Humidity
70%
comfortable
UV Index
6
High
Wind
9 km/h
Gusts 20
Sea Temp
19°C
swimming hotel pools
Crowds
Busy
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
17 μg/m³
PM10
30 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
24°C
Nighttime
13°C
Humidity and wind affect how the actual temperature feels.
Wind
9 km/h
Max gust 20 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Schueberfouer funfair opens late August (canonical Luxembourg festival)
- EU institutions on summer recess — reduced business pricing
- Mosel valley vineyards entering harvest season
- European school holidays + family-friendly
- Late summer warmth + long daylight
Cons
- Schueberfouer overlap +25-35% hotel surge
- European school holiday crowds at peak
- 12 rainy days/month — afternoon thunderstorms
- Mosel valley winery tastings booking tighter (harvest prep)
August Events & Festivals
- Schueberfouer funfair opens late August (270-year-old market, EU's oldest)
- EU institutions on summer recess
- European school holidays + family vacation peak
- Wine harvest prep at Mosel valley vineyards
Luxembourg in August — Full Picture
August opens with EU institution summer recess (reduced business midweek surge) and closes with the canonical Schueberfouer funfair opening late August on Place de la Constitution — the EU's oldest annual market (established 1340 by Grand Duke John the Blind, the same sovereign in Notre-Dame Cathedral's crypt).
The Schueberfouer runs late August through mid-September — 4 weeks of carnival rides + traditional Gromperekichelcher (potato pancakes) + Bofferding draft + Luxembourg Crémant + atmospheric medieval-meets-modern fairground. Hotel rates surge +25-35% across the Schueberfouer overlap. Book 4-6 weeks ahead for late August through mid-September stays.
Mosel valley vineyards begin harvest prep mid-month — winemakers' tour windows tighten, and serious wine tastings shift to fall vintage focus. The Mosel valley's late-August Crémant tastings + summer-vintage Mosel Riesling releases are canonical.
What to Wear & What to Pack
Late summer — daytime 24°C / 75°F, nighttime 14°C / 57°F + occasional heatwaves. T-shirt + light layers + sunglasses + hat + sunscreen + comfortable walking shoes. Schueberfouer funfair attire (casual + comfortable for crowded fairgrounds).
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
14°C
5.7°C
13.3/mo
Summer (Jun·Jul·Aug)
Current23.3°C
13.3°C
12.3/mo
Autumn (Sep·Oct·Nov)
14°C
7°C
13.7/mo
Winter (Dec·Jan·Feb)
5°C
-0.3°C
16.3/mo
Luxembourg Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 4° | -1° | 17d·80mm | 1.5h | 85% | 1 | Quiet | Low season | |
| 6° | 0° | 15d·65mm | 2.5h | 80% | 2 | Quiet | Low season | |
| 10° | 3° | 14d·65mm | 4h | 75% | 3 | Quiet | Shoulder | |
| 14° | 5° | 13d·60mm | 5.5h | 70% | 4 | Moderate | Shoulder | |
| May (Best) | 18° | 9° | 13d·65mm | 7h | 70% | 5 | Busy | Peak |
| June (Best) | 22° | 12° | 13d·75mm | 8h | 70% | 6 | Busy | Peak |
| July (Best) | 24° | 14° | 12d·75mm | 8h | 70% | 7 | Busy | Peak |
| August (Best) | 24° | 14° | 12d·75mm | 7.5h | 70% | 6 | Busy | Peak |
| September (Best) | 20° | 11° | 12d·70mm | 6h | 75% | 4 | Busy | Peak |
| 14° | 7° | 13d·70mm | 4h | 80% | 2 | Moderate | Shoulder | |
| 8° | 3° | 16d·80mm | 2h | 85% | 1 | Quiet | Shoulder | |
| 5° | 0° | 17d·85mm | 1.5h | 85% | 1 | Busy | Peak |
View Other Months
Luxembourg August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Luxembourg?
Luxembourg in August is very-high. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Luxembourg in August?
Luxembourg August averages a high of 24°C and a low of 14°C.
Does it rain much in Luxembourg in August?
Luxembourg August averages 75mm of rainfall over about 12 rainy days.
What should I wear in Luxembourg in August?
Late summer — daytime 24°C / 75°F, nighttime 14°C / 57°F + occasional heatwaves. T-shirt + light layers + sunglasses + hat + sunscreen + comfortable walking shoes. Schueberfouer funfair attire (casual + comfortable for crowded fairgrounds).
What time are sunrise and sunset in Luxembourg in August?
Luxembourg August sunrise is 06:15 and sunset is 20:30, with 14h 15min of daylight.
What's the air quality like in Luxembourg in August?
Luxembourg August air quality (AQI) averages 48, rated Good. PM2.5 averages 17μg/m³.
What activities are recommended in Luxembourg in August?
In August, Luxembourg is great for Schueberfouer funfair (late August opening), Bock + Pétrusse Casemates + Old Town walking, Mosel valley harvest prep tastings.
Is August peak season in Luxembourg?
Luxembourg August crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Luxembourg
View Other Months
Planning a August trip to Luxembourg?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.