Weather in Ottawa in May 2018

Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Ottawa in May. Check more long-term weather averages for Ottawa in May before you book your next holiday to Ontario in 2018.

Key weather averages for Ottawa in May

  • 18°C maximum daytime temperature in May in Ottawa18
    18°C max day temperature
  • 7 hours of sunshine per day (50% of daylight hours) in May in Ottawa7
    7 hours of sunshine per day
  • 12 days with some rainfall in May in Ottawa12
    12 days with some rainfall
  • 7°C minimum night-time temperature in May in Ottawa7
    7°C min night temperature
  • 15 hours of daylight per day in May in Ottawa15
    15 hours of daylight per day
  • No heat & humidity in May in Ottawa0
    No heat & humidity
  • 73 mm monthly rainfall in May in Ottawa73
    73 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Ottawa6
    6 (High) UV index

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

Metric (°C / mm)  |  Imperial (°F / inches)

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Guide to Ottawa weather in May

The average maximum daytime temperature in Ottawa in May is a comfortable 18°C (64°F). The average night-time temperature is usually a cold 7°C (45°F). There are usually 7 hours of bright sunshine each day, which represents 50% of the 15 hours of daylight.

Expect 73mm (2.9 inches) of rainfall across the whole of May with 12 days with some rain falling. Maximum UV levels will be high (6 UV index) at midday when the skies are clear.

The weather in Ottawa in May is represented by Ottawa.

Ottawa sunrise & sunset times for May 2018

Browse the sunrise & sunset times for Ottawa in May 2018. Select a month to view Ottawa sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st May 2018 05:51 20:09
Wednesday, 2nd May 2018 05:50 20:11
Thursday, 3rd May 2018 05:48 20:12
Friday, 4th May 2018 05:47 20:13
Saturday, 5th May 2018 05:45 20:14
Sunday, 6th May 2018 05:44 20:16
Monday, 7th May 2018 05:43 20:17
Tuesday, 8th May 2018 05:41 20:18
Wednesday, 9th May 2018 05:40 20:19
Thursday, 10th May 2018 05:39 20:21
Friday, 11th May 2018 05:37 20:22
Saturday, 12th May 2018 05:36 20:23
Sunday, 13th May 2018 05:35 20:24
Monday, 14th May 2018 05:34 20:25
Tuesday, 15th May 2018 05:32 20:27
Wednesday, 16th May 2018 05:31 20:28
Thursday, 17th May 2018 05:30 20:29
Friday, 18th May 2018 05:29 20:30
Saturday, 19th May 2018 05:28 20:31
Sunday, 20th May 2018 05:27 20:32
Monday, 21st May 2018 05:26 20:33
Tuesday, 22nd May 2018 05:25 20:34
Wednesday, 23rd May 2018 05:24 20:35
Thursday, 24th May 2018 05:23 20:36
Friday, 25th May 2018 05:23 20:37
Saturday, 26th May 2018 05:22 20:38
Sunday, 27th May 2018 05:21 20:39
Monday, 28th May 2018 05:20 20:40
Tuesday, 29th May 2018 05:20 20:41
Wednesday, 30th May 2018 05:19 20:42
Thursday, 31st May 2018 05:18 20:43
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Ottawa weather by month

Check Ottawa weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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