Best time to visit Aveiro

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 (?)
124677875321
On the sunniest 1 in 10 days, UV reaches this — and even higher
36889975
PM2.5 air quality · on a typical day (?)
121311108108109101112
On the worst 1 in 10 days, PM2.5 reaches this — and even higher
212618161215121513191720
July 9/10 feels 24°C (−2°C vs 1991-2020) · HCI 93/100
Day 24° · Night 17° ☀ UV 8.3 (very high) 65% humidity 23 km/h wind 3 rain days (25h) 310h sun
Thermal 8
Sky 10
Rain 10
Wind 9

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 climatesPorto95% · Sintra95% · Coimbra93%

Other destinations with the most-alike year-round climate to Aveiro (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 Aveiro'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 7–14 12 11 157 14.3 75% 19 161 1 Quiet 6
Feb 9–16 14 10 122 12.2 70% 21 174 2 Quiet 7
Mar 9–17 15 13 173 13.3 68% 23 211 4 Quiet 6
Apr 11–19 17 12 166 13.8 67% 22 246 6 Quiet 7
May 14–21 19 10 128 12.8 65% 24 278 7 Quiet 8
Jun 15–22 21 8 108 13.5 69% 22 295 7 Quiet 8
Jul 17–24 24 3 25 8.3 65% 23 310 8 Quiet 9
Aug 16–24 23 2 21 10.5 68% 23 283 7 Peak 9
Sep 16–23 23 8 109 13.6 68% 21 238 5 Peak 8
Oct 14–21 21 15 212 14.1 75% 22 186 3 Moderate 6
Nov 11–18 17 13 165 12.7 75% 20 156 2 Peak 6
Dec 9–15 13 16 207 12.9 78% 21 151 1 Moderate 5

UV Index in Aveiro by Month

UV index in Aveiro peaks at 8 (very high) in July, dropping to 1 (low) in January. July reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.

Best months in detail

July

9/10

17–24°C · 3 rain days (25h) · 310 sun hours · 65% humidity · Quiet crowd · UV 8 (very high)

August

9/10

16–24°C · 2 rain days (21h) · 283 sun hours · 68% humidity · Peak crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)

June

8/10

15–22°C · 8 rain days (108h) · 295 sun hours · 69% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)

Every month

Show the other 9 months in detail

January

6/10

7–14°C (feels 12°C) · 11 rain days (157h) · 161 sun hours · 75% humidity · Quiet crowd · UV 1 (low)

February

7/10

9–16°C (feels 14°C) · 10 rain days (122h) · 174 sun hours · 70% humidity · Quiet crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)

March

6/10

9–17°C (feels 15°C) · 13 rain days (173h) · 211 sun hours · 68% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)

April

7/10

11–19°C (feels 17°C) · 12 rain days (166h) · 246 sun hours · 67% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (high)

May

8/10

14–21°C (feels 19°C) · 10 rain days (128h) · 278 sun hours · 65% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)

September

8/10

16–23°C · 8 rain days (109h) · 238 sun hours · 68% humidity · Peak crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)

October

6/10

14–21°C · 15 rain days (212h) · 186 sun hours · 75% humidity · Moderate crowd · UV 3 (moderate) · sunniest 1 in 10 days reach 5 (moderate)

November

6/10

11–18°C (feels 17°C) · 13 rain days (165h) · 156 sun hours · 75% humidity · Peak crowd · UV 2 (low)

December

5/10

9–15°C (feels 13°C) · 16 rain days (207h) · 151 sun hours · 78% humidity · Moderate crowd · UV 1 (low)

Frequently asked questions about visiting Aveiro

When is the best time to visit Aveiro?

July is the highest-scoring month (9/10 on the Holiday Climate Index). Typical conditions: 17–24°C (3 rainy days). The top three months by score are July, August, June.

What is the worst time to visit Aveiro?

December is the lowest-scoring month (5/10). Typical conditions: 9–15°C (16 rainy days).

When are crowds lowest in Aveiro?

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

July (climate 9/10, crowd index 17) and May (climate 8/10, crowd index 8) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

What is the UV index in Aveiro by month?

UV peaks at 8 (very high) in July and is lowest in January at 1 (low). Monthly peak values: Jan 1, Feb 2, Mar 4, Apr 6, May 7, Jun 7, Jul 8, Aug 7, Sep 5, Oct 3, Nov 2, Dec 1. July reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.

What is the UV index in Aveiro in July?

July is the peak UV month in Aveiro, with a daily-peak UV index of 8 (very high). At this level, sunburn can occur in under 20 minutes on unprotected fair skin. Apply SPF 50+, wear protective clothing and a hat, and avoid direct midday sun (11:00–17:00).

How high can UV get in Aveiro 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 7 (high), but the top 10% of days reach UV 9 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: February, March, April, May, June, August, September, October. Plan sun protection for the worst case, not the average.

Is air quality in Aveiro bad for travelers?

PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 8 months: January, February, March, April, August, October, November, December. The worst month is February with a typical-day mean of 13 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 26 µg/m³ (unhealthy) 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.