Juncal, Portugal — Weather in May 2027

Monthly climate averages for Juncal, Portugal. Based on 10-year ERA5 reanalysis data.

Csb Warm-Summer Mediterranean
8.7 /10
Excellent

May is an excellent month in Juncal

Climate Overview

Juncal, Portugal in May has warm conditions, with highs averaging 21.2°C (70°F). Sea temperature stays cool at 17.4°C (63°F).

This month falls at the end of Spring.

Daily highs in May gradually rise from around 20°C (69°F) at the start to 24°C (74°F) by month's end.

Rainfall is heaviest during the first third of the month, while the last third tends to be drier.

Expect around 12.0h of sunshine at the start of May, increasing to 12.5h by the end.

The warmest days tend to fall around the 30th, averaging 23.7°C (75°F).

Compared to April, this month is about 3°C warmer with 5 fewer rainy days. Temperatures will rise further into June.

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Monthly May Averages

Temperature
21°C / 13°C
Feels Like
21°C / 12°C
Rain
6 days · 46 mm
Sunshine
12.1h / day
Humidity
75% — Humid
Wind
22 km/h
Wind Direction
NNW (333°)
Gusts
43 km/h
Daylight
14.4 h
Cloud Cover
49%
Clear Sky Days
6.3
UV Index
7.3 — Very High
Sea Temperature
17°C
Dew Point
13°C — Comfortable
Moon Phase
Waxing Gibbous · 66%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

28°C 24°C 20°C 16°C 12°C 8°C 4°C 151015202531
HighLow

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 151015202531
Rainfall

Daily Sunshine

0h 4h 8h 12h 16h 151015202531
Sunshine

Daily Wind Speed

0 6 12 18 24 30 151015202531
Wind Speed
Sun Position
Sunrise 06:23
Daylight 14.3h
Sunset 20:44

What to Expect

Daytime temperatures around 21°C (70°F) are ideal for full-day outdoor exploration.

Rain usually comes in shorter passing showers rather than all-day rain.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Fair
Temp
14°C / 8°C
Feels Like
12°C / 5°C
Rain
9days (77 mm) Wet
Sun
7h Good
Humidity
82% Humid
UV
2.6 Moderate
View Details
February
Fair
Temp
16°C / 8°C
Feels Like
13°C / 6°C
Rain
8days (53 mm) Wet
Sun
8.2h Good
Humidity
79% Humid
UV
3.6 Moderate
View Details
March
Good
Temp
16°C / 9°C
Feels Like
14°C / 6°C
Rain
12days (96 mm) Wet
Sun
9.5h Good
Humidity
78% Humid
UV
4.9 Moderate
View Details
April
Good
Temp
19°C / 11°C
Feels Like
17°C / 9°C
Rain
11days (83 mm) Wet
Sun
10.8h Excellent
Humidity
78% Humid
UV
6.4 High
View Details
May
Excellent
Temp
21°C / 13°C
Feels Like
21°C / 12°C
Rain
6days (46 mm) Good
Sun
12.1h Excellent
Humidity
75% Muggy
UV
7.3 Very High
View Details
June best
Excellent
Temp
23°C / 15°C
Feels Like
24°C / 15°C
Rain
6days (23 mm) Good
Sun
12.8h Excellent
Humidity
75% Muggy
UV
7.6 Very High
View Details
July best
Excellent
Temp
26°C / 17°C
Feels Like
27°C / 17°C
Rain
2days (6 mm) Excellent
Sun
13h Excellent
Humidity
73% Muggy
UV
7.9 Very High
View Details
August best
Excellent
Temp
27°C / 17°C
Feels Like
27°C / 17°C
Rain
1days (3 mm) Excellent
Sun
12.2h Excellent
Humidity
74% Muggy
UV
7.4 Very High
View Details
September best
Excellent
Temp
25°C / 16°C
Feels Like
25°C / 16°C
Rain
4days (32 mm) Good
Sun
10.7h Excellent
Humidity
75% Muggy
UV
5.9 High
View Details
October
Good
Temp
22°C / 15°C
Feels Like
22°C / 14°C
Rain
10days (82 mm) Wet
Sun
8.7h Good
Humidity
79% Humid
UV
4.3 Moderate
View Details
November
Good
Temp
17°C / 11°C
Feels Like
15°C / 9°C
Rain
12days (96 mm) Wet
Sun
7.3h Good
Humidity
83% Humid
UV
3 Moderate
View Details
December
Fair
Temp
15°C / 9°C
Feels Like
13°C / 7°C
Rain
10days (83 mm) Wet
Sun
7h Good
Humidity
84% Humid
UV
2.4 Moderate
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 14°C / 8°C 12°C / 5°C 9days (77 mm) Wet 7h Good 82% Humid 2.6 Moderate Fair View Details
February 16°C / 8°C 13°C / 6°C 8days (53 mm) Wet 8.2h Good 79% Humid 3.6 Moderate Fair View Details
March 16°C / 9°C 14°C / 6°C 12days (96 mm) Wet 9.5h Good 78% Humid 4.9 Moderate Good View Details
April 19°C / 11°C 17°C / 9°C 11days (83 mm) Wet 10.8h Excellent 78% Humid 6.4 High Good View Details
May 21°C / 13°C 21°C / 12°C 6days (46 mm) Good 12.1h Excellent 75% Muggy 7.3 Very High Excellent View Details
June best 23°C / 15°C 24°C / 15°C 6days (23 mm) Good 12.8h Excellent 75% Muggy 7.6 Very High Excellent View Details
July best 26°C / 17°C 27°C / 17°C 2days (6 mm) Excellent 13h Excellent 73% Muggy 7.9 Very High Excellent View Details
August best 27°C / 17°C 27°C / 17°C 1days (3 mm) Excellent 12.2h Excellent 74% Muggy 7.4 Very High Excellent View Details
September best 25°C / 16°C 25°C / 16°C 4days (32 mm) Good 10.7h Excellent 75% Muggy 5.9 High Excellent View Details
October 22°C / 15°C 22°C / 14°C 10days (82 mm) Wet 8.7h Good 79% Humid 4.3 Moderate Good View Details
November 17°C / 11°C 15°C / 9°C 12days (96 mm) Wet 7.3h Good 83% Humid 3 Moderate Good View Details
December 15°C / 9°C 13°C / 7°C 10days (83 mm) Wet 7h Good 84% Humid 2.4 Moderate Fair View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaSunscreen (SPF 30+)SunglassesComfortable walking shoes

Frequently Asked Questions

May is typically excellent for visiting Juncal, with average highs of 21°C (70°F) and around 6 rainy days. Juncal, Portugal in May has warm conditions, with highs averaging 21.2°C (70°F). Sea temperature stays cool at 17°C (6
Juncal typically sees around 6 rainy days in May with 46 mm (1.8 in) of total rainfall. An umbrella should suffice.
Evenings in Juncal during May are mild at 13°C (56°F). A light cardigan is usually enough.
With highs of 21°C (70°F) and lows of 13°C (56°F) in May, we recommend: Umbrella, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. Comfortable walking shoes are essential.
May is not the most favourable month weather-wise in Juncal. Consider visiting during months with milder temperatures or less rainfall for a better experience.
The average UV index in Juncal during May is 7 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Juncal gets approximately 14 hours of daylight per day in May, with around 12 hours of sunshine.
Snow is uncommon in Juncal during May based on 10-year climate averages.

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