Stratford weather in May

In May, Stratford sees average daytime highs of 18°C and overnight lows near 8°C, with 99 mm of rain across 12.2 wet days and about 14.5 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 21°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 14 h 54 min by month's end. Set against the rest of the year, May is Stratford's 5th-clearest and 8th-windiest month. For the whole year in context, see Stratford's year-round climate.

Daytime high
18°
5th warmest
Overnight low
8th coldest
Rainfall
99 mm
12.2 wet days
Daylight
14 h 30 min
5:05 AM – 7:35 PM
Cloud cover
62%
5th clearest
Wind
13 km/h
8th windiest
Solar energy
5.89 kWh/m²
Travel score
5.5
out of 10

Stratford is city in Ontario, Canada.

Density
1,435/km²
people per km²
Founded
1859

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 16°C in the first days to 21°C by the end.

A typical May day in Stratford reaches about 18°C in the afternoon and slips back to 8°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 26°C. Set against its neighbours, May runs about 6°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1155
2155
3165
4165
5166
6166
7166
8176
9176
10176
11177
12177
13187
14187
15187
16187
17188
18198
19198
20198
21198
22199
23209
24209
25209
26209
272010
282110
292110
302110
312110

How May really feels in Stratford

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Stratford weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -9°7512.3119.20.0
Feb-1° / -10°599.68.910.20.0
Mar / -5°6810.96.411.60.3
Apr12° / 9412.62.613.22.8
May18° / 9912.2014.55.5
Jun23° / 13°10011.9015.26.5
Jul25° / 15°10011.9014.96.6
Aug24° / 14°8110.6013.86.9
Sep21° / 10°8910.2012.36.4
Oct14° / 8811.90.410.83.7
Nov / -1°8012.14.79.50.7
Dec / -6°7112.39.88.80.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23961
33961
43961
53961
64060
74060
84159
94159
104159
114258
124258
134258
144258
154357
164258
174258
184258
194258
204258
214357
224357
234456
244456
254555
264555
274555
284456
294456
304456
314456

Chance of precipitation in May

Any precipitation

Stratford gets around 99 mm of rain over 12.2 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
242
342
442
542
642
742
842
941
1041
1141
1241
1340
1440
1540
1640
1739
1839
1938
2038
2138
2237
2337
2437
2537
2637
2737
2838
2938
3038
3138

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 85% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
196310
296310
396310
495410
595410
694420
793520
893520
992620
1091720
1191720
1289830
1389830
1489830
1588930
1687940
17861040
18851041
19831151
20821161
21821161
22801172
23781282
24781282
25771292
267512103
277413103
287413103
297214113
307114114
317114114

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 5:24 AM to 4:53 AM, and sunset from 7:18 PM to 7:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:247:18
213.95:237:19
314.05:227:20
414.05:207:21
514.15:197:22
614.15:177:23
714.15:167:25
814.25:157:26
914.25:147:27
1014.35:127:28
1114.35:117:29
1214.35:107:30
1314.45:097:31
1414.45:087:33
1514.55:067:34
1614.55:057:35
1714.55:047:36
1814.65:037:37
1914.65:027:38
2014.65:017:39
2114.75:007:40
2214.74:597:41
2314.74:597:42
2414.84:587:43
2514.84:577:44
2614.84:567:45
2714.84:557:46
2814.94:557:47
2914.94:547:48
3014.94:537:49
3114.94:537:50

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.89 kWh/m².

For context, solar energy here swings from a low near 1.3 kWh/m² to a high of 6.34 kWh/m² in June across the year — May's 5.89 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.6Bright
55.6Bright
65.6Bright
75.7Bright
85.7Bright
95.7Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.9Bright
165.9Bright
175.9Bright
186.0Bright
196.0Bright
206.0Intense
216.0Intense
226.0Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in May

Is May a good time to visit Stratford?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.5
Sightseeing
5th-best month of the year
2.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Stratford for sightseeing.

What to pack for Stratford in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Stratford sees daytime highs around 18°C and nights near 8°C. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

UV index in Stratford in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Stratford peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 12 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Jan 12UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May7High
Jun9Very high
Jul9Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec2Low
Location & terrain

Where is Stratford?

Stratford sits at 43.4°N, 80.9°W, 365 m above sea level, in Canada. The nearest listed city is Woodstock, 31 km away.

Topography around Stratford

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Stratford.

Within 3 km, the terrain around Stratford has only modest variations in elevation — a maximum elevation change of 40 m around an average of 363 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 115 m; within 80 km, significant variations in elevation — a maximum elevation change of 417 m.

The land around Stratford is covered by cropland (49%) and trees (24%) within 3 km, cropland (75%) within 16 km, and cropland (65%) and trees (22%) within 80 km.

3 km
40 m
16 km
115 m
80 km
417 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Woodstock 31 km · Forest Heights 35 km · Kitchener 36 km · Waterloo 37 km · London 48 km · Cambridge 52 km · Hespeler 52 km · Christopher-Champlain 52 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Stratford (43.3668°, -80.9497°, elevation 365 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).