Thorold weather in June

In June, Thorold sees average daytime highs of 22°C and overnight lows near 17°C, with 103 mm of rain across 12.1 wet days and about 15.1 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 24°C by the end. The sky is clear or mostly clear about 33% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of June to 15 h 12 min by month's end. Set against the rest of the year, June is Thorold's 4th-clearest and 10th-windiest month. For the whole year in context, see Thorold's year-round climate.

Daytime high
22°
3rd warmest
Overnight low
17°
10th coldest
Rainfall
103 mm
12.1 wet days
Daylight
15 h 12 min
4:42 AM – 7:52 PM
Cloud cover
56%
4th clearest
Wind
15 km/h
10th windiest
Solar energy
6.37 kWh/m²
Travel score
6.4
out of 10

Thorold is city in Niagara Region, Ontario, Canada.

Density
227/km²
people per km²
Founded
1850

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 24°C by the end.

A typical June day in Thorold reaches about 22°C in the afternoon and slips back to 17°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°C. Set against its neighbours, June runs about 6°C warmer than May and about 3°C cooler than July.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12014
22015
32015
42015
52115
62116
72116
82116
92116
102216
112217
122217
132217
142217
152217
162317
172318
182318
192318
202318
212318
222318
232419
242419
252419
262419
272419
282419
292419
302419

How June really feels in Thorold

Once humidity and wind are folded in, June 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

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

Thorold weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -6°7712.48.79.20.0
Feb-1° / -6°609.4710.20.0
Mar / -3°7710.94.811.60.0
Apr / 10011.91.813.11.7
May16° / 11°9012.2014.44.8
Jun22° / 17°10312.1015.16.4
Jul25° / 20°10512014.96.7
Aug24° / 20°9010.9013.86.9
Sep21° / 16°9010.3012.36.4
Oct14° / 10°9812.40.110.83.9
Nov / 8511.62.59.51.2
Dec / -1°83126.88.90.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 18% of June, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24852
34852
44852
54753
64753
74951
84951
94951
104852
114852
124951
134951
144951
155050
165050
175050
185149
195149
205149
215149
225248
235347
245347
255446
265545
275545
285644
295644
305743

Chance of precipitation in June

Any precipitation

Thorold gets around 103 mm of rain over 12.1 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
436
536
636
737
837
937
1037
1138
1238
1338
1439
1540
1640
1741
1841
1942
2042
2143
2243
2342
2442
2542
2641
2741
2840
2939
3039

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 19% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
159201371
257211471
354221581
454221581
552231681
650231791
748241891
846241991
9442420101
10422521102
11402522112
12382523112
13362624122
14342625132
15322625142
16302626152
17292626162
18272627173
19262627183
20252627193
21232627203
22222627223
23212626233
24202626244
25202626244
26192626255
27182525266
28182525266
29182524267
30172424268

Wind in June

Winds average 15 km/h in June.

Across June, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 54 min at the start of June to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over June. Sunrise moves from 4:46 AM to 4:45 AM, and sunset from 7:43 PM to 7:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:467:43
215.04:467:43
315.04:457:44
415.04:457:45
515.04:447:46
615.04:447:46
715.14:437:47
815.14:437:48
915.14:437:48
1015.14:437:49
1115.14:427:50
1215.14:427:50
1315.14:427:51
1415.24:427:51
1515.24:427:52
1615.24:427:52
1715.24:427:53
1815.24:427:53
1915.24:427:53
2015.24:427:54
2115.24:427:54
2215.24:427:54
2315.24:437:54
2415.24:437:54
2515.24:437:55
2615.24:447:55
2715.24:447:55
2815.24:447:55
2915.24:457:55
3015.24:457:55

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.37 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.27 kWh/m² to a high of 6.37 kWh/m² in June across the year — June's 6.37 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in June

Is June a good time to visit Thorold?

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

6.4
Sightseeing
3rd-best month of the year
4.6
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Thorold for sightseeing.

What to pack for Thorold in June

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

In June, Thorold sees daytime highs around 22°C and nights near 17°C. Pack sun protection. Worth having: light clothes and rain gear. About 12 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Thorold in June

The nearest coast averages about 17°C in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 28 km away) is warmest in August at about 23°C and coldest in February near 1°C.

It's comfortable for a long swim from Jul 4 to Sep 20 — about 2.6 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan3Bracing
Feb1Bracing
Mar1Bracing
Apr3Bracing
May9Bracing
Jun17Cool
Jul22Refreshing
Aug23Refreshing
Sep21Refreshing
Oct16Cool
Nov10Bracing
Dec6Bracing

UV index in Thorold in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Thorold peaks around June 19 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 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 19UV 8Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May6High
Jun8Very high
Jul7Very high
Aug6High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Thorold in June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.

Air quality in Thorold is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1315 µg/m³Nov 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar12Good
Apr12Moderate
May14Moderate
Jun15Moderate
Jul15Moderate
Aug13Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Thorold?

Thorold sits at 43.1°N, 79.2°W, 178 m above sea level, in Canada. The nearest listed city is St. Catharines, 7.0 km away.

Topography around Thorold

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

Within 3 km, the terrain around Thorold has only modest variations in elevation — a maximum elevation change of 85 m around an average of 168 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 193 m; within 80 km, significant variations in elevation — a maximum elevation change of 532 m.

The land around Thorold is covered by trees (29%), artificial surfaces (29%) and grassland (22%) within 3 km, trees (29%), grassland (23%) and cropland (20%) within 16 km, and water (41%) and trees (26%) within 80 km.

3 km
85 m
16 km
193 m
80 km
532 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: St. Catharines 7.0 km · Niagara Falls 11 km · Niagara Falls 12 km · Welland 15 km · Niagara-on-the-Lake 18 km · Grand Island 21 km · Port Colborne 24 km · North Tonawanda 29 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 Thorold (43.1168°, -79.1996°, elevation 178 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).