Onex in May

6.0out of 10

Possible, with caveats

Mild: highs around 18°C. Very wet: about 16 rainy days.

18°CAvg high
8°CAvg low
16Rainy days (141 mm)
14:46 hDaylight
06:09Sunrise · 20:55 Sunset

Why this score

  • Mild: highs around 18°C
  • Very wet: about 16 rainy days

What to wear and pack

  • Layers you can add or remove
  • Rain jacket or compact umbrella

How reliable is the forecast?

Rain in May varies a lot between years (±3.5 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.

Year at a glance

5° -2° J 6° -1° F 10° 1° M 14° 4° A 18° 8° M 21° 12° J 24° 13° J 23° 13° A 19° 10° S 14° 6° O 8° 2° N 5° -1° D Rainy days

Weather by month

MonthAvg highAvg lowRainfall Rainy daysHumiditySunshine Score
January 5°C-2°C126 mm 13– – 4.1
February 6°C-1°C108 mm 11– – 4.6
March 10°C1°C119 mm 13– – 5.3
April 14°C4°C115 mm 13– – 5.9
May 18°C8°C141 mm 16– – 6.0
June 21°C12°C130 mm 15– – 6.8
July 24°C13°C130 mm 14– – 7.0
August 23°C13°C129 mm 13– – 7.1
September 19°C10°C120 mm 12– – 6.8
October 14°C6°C128 mm 13– – 5.9
November 8°C2°C136 mm 13– – 4.8
December 5°C-1°C147 mm 14– – 4.0

Frequently asked questions

How hot is Onex in May?

Daytime highs average 18°C and nights about 8°C.

When is the best time to visit Onex?

The best months are August, July, June, September.