Saint-Lazare weather in May

In May, Saint-Lazare sees average daytime highs of 19°C and overnight lows near 8°C, with 100 mm of precipitation across 11.5 wet days and about 14.7 hours of daylight. It is the 5th-warmest and 4th-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 21% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 hours at the start of May to 15 h 12 min by month's end. Set against the rest of the year, May is Saint-Lazare's 5th-clearest and 8th-windiest month. For the whole year in context, see Saint-Lazare's year-round climate.

Daytime high
19°
5th warmest
Overnight low
8th coldest
Precipitation
100 mm
11.5 wet days
Daylight
14 h 42 min
4:32 AM – 7:13 PM
Cloud cover
66%
5th clearest
Wind
12 km/h
8th windiest
Solar energy
5.59 kWh/m²
Travel score
5.7
out of 10

Saint-Lazare is city in Montérégue, Quebec, Canada.

Density
295/km²
people per km²
Founded
1875

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 Saint-Lazare reaches about 19°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 12°C and 26°C. Set against its neighbours, May runs about 8°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1165
2165
3165
4165
5176
6176
7176
8176
9176
10187
11187
12187
13187
14187
15197
16198
17198
18198
19198
20208
21209
22209
23209
24209
252010
262010
272110
282110
292110
302110
312111

How May really feels in Saint-Lazare

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.

Saint-Lazare weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-5° / -14°7710.69.48.90.0
Feb-4° / -13°6298.310.10.0
Mar / -7°7510.4711.60.1
Apr11° / 10511.42.913.22.6
May19° / 10011.50.214.75.7
Jun24° / 13°10511.7015.46.4
Jul26° / 16°10012.5015.16.3
Aug25° / 15°9811.2013.96.7
Sep20° / 10°9610.2012.36.3
Oct13° / 10911.60.610.73.4
Nov / -2°8811.43.89.30.4
Dec-2° / -9°8611.69.18.60.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23664
33664
43664
53664
63763
73763
83763
93763
103862
113862
123862
133862
143862
153961
163862
173961
184060
193961
203961
213862
223961
233862
243862
253961
263862
273862
283763
293763
303763
313664

Chance of precipitation in May

Any precipitationSnow

Saint-Lazare gets around 100 mm of rain and snow over 11.5 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 40% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1362
2362
3352
4352
5352
6351
7351
8351
9351
10351
11351
12351
13351
14351
15351
16351
17360
18360
19360
20370
21370
22380
23380
24380
25390
26390
27390
28390
29400
30400
31400

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
197300
297300
396400
496400
596400
696400
795500
895500
995500
1094510
1194510
1294510
1394510
1494510
1593610
1692620
1792620
1891630
1990730
2088840
2188840
2286950
23851050
24821161
25821161
26811261
27791371
28791371
29781471
30761572
31751672

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

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

Days grow by about 72 minutes over May. Sunrise moves from 4:53 AM to 4:19 AM, and sunset from 6:55 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.04:536:55
214.14:516:56
314.14:506:57
414.24:486:58
514.24:477:00
614.34:457:01
714.34:447:02
814.34:437:03
914.44:417:05
1014.44:407:06
1114.54:397:07
1214.54:377:08
1314.64:367:10
1414.64:357:11
1514.64:347:12
1614.74:327:13
1714.74:317:14
1814.84:307:16
1914.84:297:17
2014.84:287:18
2114.94:277:19
2214.94:267:20
2314.94:257:21
2415.04:247:22
2515.04:237:23
2615.04:227:24
2715.14:227:25
2815.14:217:26
2915.14:207:27
3015.14:197:28
3115.24:197:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.59 kWh/m².

For context, solar energy here swings from a low near 1.22 kWh/m² to a high of 5.97 kWh/m² in June across the year — May's 5.59 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.3Bright
35.3Bright
45.3Bright
55.4Bright
65.4Bright
75.4Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in May

Is May a good time to visit Saint-Lazare?

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

5.7
Sightseeing
5th-best month of the year
2.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Saint-Lazare for sightseeing.

What to pack for Saint-Lazare in May

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

In May, Saint-Lazare sees daytime highs around 19°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 Saint-Lazare in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Saint-Lazare peaks around July 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 10 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 13UV 8Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun6High
Jul8Very high
Aug4Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Saint-Lazare?

Saint-Lazare sits at 45.4°N, 74.1°W, 56 m above sea level, in Canada. The nearest listed city is Vaudreuil-Dorion, 8.0 km away.

Topography around Saint-Lazare

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

Within 3 km, the terrain around Saint-Lazare has only modest variations in elevation — a maximum elevation change of 77 m around an average of 67 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 257 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,210 m.

The land around Saint-Lazare is covered by trees (64%) within 3 km, trees (34%) and cropland (32%) within 16 km, and trees (52%) and cropland (31%) within 80 km.

3 km
77 m
16 km
257 m
80 km
1,210 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Vaudreuil-Dorion 8.0 km · Les Coteaux 15 km · Salaberry-de-Valleyfield 17 km · Pierrefonds 20 km · Beaconsfield 21 km · L'Île-Bizard–Sainte-Geneviève 21 km · Kirkland 22 km · Deux-Montagnes 23 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 Saint-Lazare (45.4001°, -74.1326°, elevation 56 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).