Roy, Belgium — Weather in May 2027

Monthly climate averages for Roy, Belgium. Based on 10-year ERA5 reanalysis data.

Cfb Oceanic
6 /10
Fair

May is a fair month in Roy

Climate Overview

Roy, Belgium in May has mild conditions, with highs averaging 16.5°C (62°F) and noticeably cooler mornings. Rain falls on about 12 days this month.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 14°C (57°F) at the start to 19°C (65°F) by month's end.

May sees fairly even rainfall, totalling about 77 mm across the month.

Expect around 10.4h of sunshine at the start of May, increasing to 11.4h by the end.

The warmest days tend to fall around the 29th, averaging 18.8°C (66°F).

Compared to April, this month is about 4°C warmer with 0 fewer rainy days. Temperatures will rise further into June.

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Monthly May Averages

Temperature
17°C / 7°C
Feels Like
15°C / 5°C
Rain
12 days · 76 mm
Sunshine
10.7h / day
Humidity
74% — Humid
Wind
18 km/h
Wind Direction
NW (323°)
Gusts
37 km/h
Daylight
15.5 h
Cloud Cover
64%
Clear Sky Days
2.9
UV Index
5.6 — High
Dew Point
7°C — Dry
Moon Phase
Waxing Gibbous · 66%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

24°C 20°C 16°C 12°C 8°C 4°C 0°C 151015202531
HighLow

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 151015202531
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202531
Sunshine

Daily Wind Speed

0 5 10 15 20 25 151015202531
Wind Speed
Sun Position
Sunrise 05:53
Daylight 15.4h
Sunset 21:19

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

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

Compare Months

January
Poor
Temp
4°C / -1°C
Feels Like
0°C / -5°C
Rain
15days (110 mm) Wet
Sun
3.2h Poor
Humidity
90% Very Muggy
UV
1.1 Low
Snow Days
9days
View Details
February
Poor
Temp
7°C / 0°C
Feels Like
2°C / -4°C
Rain
13days (84 mm) Wet
Sun
5h Fair
Humidity
84% Humid
UV
1.7 Low
Snow Days
5days
View Details
March
Poor
Temp
9°C / 1°C
Feels Like
5°C / -3°C
Rain
14days (85 mm) Wet
Sun
7h Good
Humidity
79% Humid
UV
3.6 Moderate
Snow Days
4days
View Details
April
Poor
Temp
13°C / 3°C
Feels Like
10°C / 0°C
Rain
12days (62 mm) Wet
Sun
9.7h Good
Humidity
74% Muggy
UV
4.6 Moderate
Snow Days
2days
View Details
May
Fair
Temp
17°C / 7°C
Feels Like
15°C / 5°C
Rain
12days (76 mm) Wet
Sun
10.7h Excellent
Humidity
74% Muggy
UV
5.6 High
View Details
June best
Excellent
Temp
21°C / 12°C
Feels Like
20°C / 10°C
Rain
13days (98 mm) Wet
Sun
11.2h Excellent
Humidity
75% Muggy
UV
6.3 High
View Details
July best
Excellent
Temp
21°C / 13°C
Feels Like
21°C / 11°C
Rain
13days (82 mm) Wet
Sun
11.2h Excellent
Humidity
73% Muggy
UV
5.8 High
View Details
August best
Excellent
Temp
22°C / 13°C
Feels Like
21°C / 12°C
Rain
14days (78 mm) Wet
Sun
10.3h Excellent
Humidity
75% Muggy
UV
5.6 High
View Details
September best
Good
Temp
18°C / 10°C
Feels Like
17°C / 8°C
Rain
12days (80 mm) Wet
Sun
8.6h Good
Humidity
79% Humid
UV
4.2 Moderate
View Details
October
Fair
Temp
14°C / 8°C
Feels Like
11°C / 5°C
Rain
14days (90 mm) Wet
Sun
5.5h Fair
Humidity
85% Humid
UV
2.5 Moderate
View Details
November
Poor
Temp
8°C / 3°C
Feels Like
5°C / -1°C
Rain
14days (75 mm) Wet
Sun
3.9h Poor
Humidity
89% Very Muggy
UV
1.3 Low
Snow Days
3days
View Details
December
Poor
Temp
5°C / 1°C
Feels Like
2°C / -3°C
Rain
16days (96 mm) Wet
Sun
2.6h Poor
Humidity
91% Very Muggy
UV
0.9 Low
Snow Days
5days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 4°C / -1°C 0°C / -5°C 15days (110 mm) Wet 3.2h Poor 90% Very Muggy 1.1 Low Poor View Details
February 7°C / 0°C 2°C / -4°C 13days (84 mm) Wet 5h Fair 84% Humid 1.7 Low Poor View Details
March 9°C / 1°C 5°C / -3°C 14days (85 mm) Wet 7h Good 79% Humid 3.6 Moderate Poor View Details
April 13°C / 3°C 10°C / 0°C 12days (62 mm) Wet 9.7h Good 74% Muggy 4.6 Moderate Poor View Details
May 17°C / 7°C 15°C / 5°C 12days (76 mm) Wet 10.7h Excellent 74% Muggy 5.6 High Fair View Details
June best 21°C / 12°C 20°C / 10°C 13days (98 mm) Wet 11.2h Excellent 75% Muggy 6.3 High Excellent View Details
July best 21°C / 13°C 21°C / 11°C 13days (82 mm) Wet 11.2h Excellent 73% Muggy 5.8 High Excellent View Details
August best 22°C / 13°C 21°C / 12°C 14days (78 mm) Wet 10.3h Excellent 75% Muggy 5.6 High Excellent View Details
September best 18°C / 10°C 17°C / 8°C 12days (80 mm) Wet 8.6h Good 79% Humid 4.2 Moderate Good View Details
October 14°C / 8°C 11°C / 5°C 14days (90 mm) Wet 5.5h Fair 85% Humid 2.5 Moderate Fair View Details
November 8°C / 3°C 5°C / -1°C 14days (75 mm) Wet 3.9h Poor 89% Very Muggy 1.3 Low Poor View Details
December 5°C / 1°C 2°C / -3°C 16days (96 mm) Wet 2.6h Poor 91% Very Muggy 0.9 Low Poor View Details

What to Wear

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

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

Packing List

Layered clothingLight jacketUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

May is typically fair for visiting Roy, with average highs of 17°C (62°F) and around 12 rainy days. Roy, Belgium in May has mild conditions, with highs averaging 16.5°C (62°F) and noticeably cooler mornings. Rain falls o
Roy typically sees around 12 rainy days in May with 76 mm (3 in) of total rainfall. Pack a waterproof jacket.
Nights in Roy during May are cool at around 7°C (45°F). Bring a jacket or sweater for evenings.
With highs of 17°C (62°F) and lows of 7°C (45°F) in May, we recommend: Layered clothing, Light jacket, Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.
May is not the most favourable month weather-wise in Roy. Consider visiting during months with milder temperatures or less rainfall for a better experience.
The average UV index in Roy during May is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Roy gets approximately 16 hours of daylight per day in May, with around 11 hours of sunshine.
Snow is uncommon in Roy during May based on 10-year climate averages.

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