Best time to visit Vianden

Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
I'm comfortable up to 27°C feels-like
22° heat-averse 30° heat-loving

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.

Saved to this browser. Changes update the strips below.
Recent · 2020-2024
Interest Google Trends 2021-2025 searches, not arrivals (?)
Day · avg daily high (?)
Night · avg overnight low (?)
UV index · On a typical day around midday, UV is about this (?)
11234655321
On the sunniest 1 in 10 days, UV reaches this — and even higher
3568775
PM2.5 air quality · on a typical day (?)
8910777566778
On the worst 1 in 10 days, PM2.5 reaches this — and even higher
1617191112108910111215
June 8/10 feels 22°C (+2°C vs 1991-2020) · HCI 82/100
Day 23° · Night 13° 58% humidity 16 km/h wind 12 rain days (123h) 260h sun
Thermal 9
Sky 8
Rain 6
Wind 10

Higher = better, including rain & wind (green = "doesn't hurt the score", not "lots of it").

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.

Similar climatesLuxembourg City98% · Trier98% · Düsseldorf96%

Other destinations with the most-alike year-round climate to Vianden (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 Vianden'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 1–5 2 14 189 13.5 85% 19 66 1 Quiet 3
Feb 2–8 5 15 193 12.9 79% 23 102 1 Quiet 4
Mar 3–11 8 13 173 13.3 68% 19 170 2 Quiet 5
Apr 4–14 11 10 130 13.0 60% 19 218 3 Moderate 6
May 9–18 16 12 153 12.8 60% 18 260 4 Moderate 7
Jun 13–23 22 12 123 10.3 58% 16 260 6 Moderate 8
Jul 14–23 23 12 131 10.9 59% 17 264 5 Peak 8
Aug 15–24 24 12 121 10.1 60% 16 253 5 Peak 8
Sep 12–21 20 10 126 12.6 66% 15 213 3 Moderate 8
Oct 9–15 14 14 180 12.9 79% 18 136 2 Moderate 5
Nov 4–9 6 13 171 13.2 85% 18 81 1 Quiet 4
Dec 2–6 3 16 210 13.1 89% 18 48 — Quiet 3

UV Index in Vianden by Month

UV index in Vianden peaks at 6 (moderate) in June, dropping to 0 (low) in December.

Best months in detail

June

8/10

13–23°C · 12 rain days (123h) · 260 sun hours · 58% humidity · Moderate crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (high)

August

8/10

15–24°C · 12 rain days (121h) · 253 sun hours · 60% humidity · Peak crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)

July

8/10

14–23°C · 12 rain days (131h) · 264 sun hours · 59% humidity · Peak crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)

Every month

Show the other 9 months in detail

January

3/10

1–5°C (feels 2°C) · 14 rain days (189h) · 66 sun hours · 85% humidity · Quiet crowd · UV 1 (low)

February

4/10

2–8°C (feels 5°C) · 15 rain days (193h) · 102 sun hours · 79% humidity · Quiet crowd · UV 1 (low)

March

5/10

3–11°C (feels 8°C) · 13 rain days (173h) · 170 sun hours · 68% humidity · Quiet crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)

April

6/10

4–14°C (feels 11°C) · 10 rain days (130h) · 218 sun hours · 60% humidity · Moderate crowd · UV 3 (moderate) · sunniest 1 in 10 days reach 5 (moderate)

May

7/10

9–18°C (feels 16°C) · 12 rain days (153h) · 260 sun hours · 60% humidity · Moderate crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (high)

September

8/10

12–21°C · 10 rain days (126h) · 213 sun hours · 66% humidity · Moderate crowd · UV 3 (moderate) · sunniest 1 in 10 days reach 5 (moderate)

October

5/10

9–15°C (feels 14°C) · 14 rain days (180h) · 136 sun hours · 79% humidity · Moderate crowd · UV 2 (low)

November

4/10

4–9°C (feels 6°C) · 13 rain days (171h) · 81 sun hours · 85% humidity · Quiet crowd · UV 1 (low)

December

3/10

2–6°C (feels 3°C) · 16 rain days (210h) · 48 sun hours · 89% humidity · Quiet crowd

Frequently asked questions about visiting Vianden

When is the best time to visit Vianden?

June is the highest-scoring month (8/10 on the Holiday Climate Index). Typical conditions: 13–23°C (12 rainy days). The top three months by score are June, August, July.

What is the worst time to visit Vianden?

December is the lowest-scoring month (3/10). Typical conditions: 2–6°C (16 rainy days).

When are crowds lowest in Vianden?

Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in July. 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 Vianden have good weather but fewer tourists?

September (climate 8/10, crowd index 43) and April (climate 6/10, crowd index 41) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

What is the UV index in Vianden by month?

UV peaks at 6 (moderate) in June and is lowest in December at 0 (low). Monthly peak values: Jan 1, Feb 1, Mar 2, Apr 3, May 4, Jun 6, Jul 5, Aug 5, Sep 3, Oct 2, Nov 1, Dec —.

What is the UV index in Vianden in June?

June is the peak UV month in Vianden, with a daily-peak UV index of 6 (moderate). Standard sun protection — sunglasses and light SPF — is recommended.

How high can UV get in Vianden 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. Plan sun protection for the worst case, not the average.

Is air quality in Vianden 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 10 µg/m³ (fair); on the worst 10% of days PM2.5 reaches 19 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.