Randalstown Weather in May

May in Randalstown brings moderate temperatures, with daytime highs of 16°C (61°F) and nights around 8°C (46°F). Quite a bit of rainfall is expected, around 78 mm (3.1 in), so pack an umbrella.

Rainfall in Randalstown in May

On average, there are about 17 days with rain during this month, averaging 78 mm (3.1 in). With rain spread across many days but low totals, showers are typically short and light rather than heavy.

Temperature in Randalstown in May

Daytime highs in Randalstown in May reach 16°C (61°F), with nights around 8°C (46°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows around 8°C (46°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Randalstown in May

With about 184 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Wind Speed in Randalstown in May

Wind speeds average 4 m/s (8 knots) during May. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Average water temperature in May

At 9°C (48°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.

If you prefer dry days with pleasant temperatures, July typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Randalstown's climate page.

Randalstown Temperature in May

Min Temperature 8°C (46°F)  

Max Temperature 16°C (61°F)  

Water Temperature 9°C (48°F) *  

Chance of Rain 57%  

Precipitation 78 mm (3.1 in)  

Rainy days 17 days  

Humidity 89% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 184 hours *  

Percentage Sunshine 39% *  

* Data from: Belfast, Ireland (12 KM, 8 Miles).

What to Wear in Randalstown in May

The weather can swing between comfortable and chilly in May, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 9°C (48°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Randalstown in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Randalstown's climate page.

More climate data for Randalstown

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Randalstown climate overview or explore weather in the United Kingdom.