Guildford weather in May

In May, Guildford sees average daytime highs of 17°C and overnight lows near 7°C, with 134 mm of precipitation across 13.2 wet days and about 15 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 18°C by the end. The sky is clear or mostly clear about 20% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 18 min at the start of May to 15 h 42 min by month's end. Set against the rest of the year, May is Guildford's 5th-clearest and 8th-windiest month. For the whole year in context, see Guildford's year-round climate.

Daytime high
17°
5th warmest
Overnight low
8th coldest
Precipitation
134 mm
13.2 wet days
Daylight
15 h 06 min
4:35 AM – 7:40 PM
Cloud cover
68%
5th clearest
Wind
5 km/h
8th windiest
Solar energy
5.4 kWh/m²
Travel score
4.8
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 18°C by the end.

A typical May day in Guildford reaches about 17°C in the afternoon and slips back to 7°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 23°C. Set against its neighbours, May runs about 4°C warmer than April and about 2°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1156
2156
3156
4156
5156
6166
7166
8166
9166
10167
11167
12167
13177
14177
15177
16177
17178
18178
19178
20178
21178
22178
23178
24178
25188
26188
27189
28189
29189
30189
31189

How May really feels in Guildford

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.

Guildford weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 34319.68.48.50.1
Feb / 20915.779.80.6
Mar / 28119.97.411.61.4
Apr13° / 19817.41.813.42.8
May17° / 13413.20.3154.8
Jun19° / 10°10812.5015.95.6
Jul22° / 12°607.8015.67.2
Aug22° / 12°848.1014.27.2
Sep19° / 10°14211.2012.45.9
Oct13° / 27116.80.210.53.1
Nov / 38020.34.98.90.9
Dec / 32919.510.28.10.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% 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 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23763
33763
43763
53862
63862
73961
83961
93961
103862
113763
123763
133763
143664
153664
163664
173565
183466
193367
203367
213367
223367
233466
243466
253466
263466
273466
283466
293367
303466
313367

Chance of precipitation in May

Any precipitationSnow

Guildford gets around 134 mm of rain and snow over 13.2 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 43% and peaks near 50% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1502
2492
3482
4472
5462
6442
7432
8432
9422
10412
11411
12401
13401
14401
15401
16401
17410
18410
19410
20420
21420
22420
23420
24430
25430
26430
27420
28420
29420
30420
31420

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
20991
21991
22991
23991
24991
25991
26991
27991
28991
29982
30982
31982

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 18 min at the start of May to 15 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over May. Sunrise moves from 4:59 AM to 4:19 AM, and sunset from 7:18 PM to 7:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:597:18
214.44:577:20
314.44:557:21
414.54:537:23
514.54:527:24
614.64:507:26
714.64:487:27
814.74:477:29
914.74:457:30
1014.84:447:31
1114.84:427:33
1214.94:417:34
1314.94:397:36
1415.04:387:37
1515.04:367:39
1615.14:357:40
1715.14:347:41
1815.24:327:43
1915.24:317:44
2015.34:307:45
2115.34:297:47
2215.34:277:48
2315.44:267:49
2415.44:257:50
2515.54:247:52
2615.54:237:53
2715.54:227:54
2815.64:217:55
2915.64:207:56
3015.64:207:57
3115.74:197:58

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.4 kWh/m².

For context, solar energy here swings from a low near 0.76 kWh/m² to a high of 6.14 kWh/m² in July across the year — May's 5.4 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.1Bright
35.2Bright
45.2Bright
55.2Bright
65.3Bright
75.3Bright
85.3Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Hazard calendar for Guildford

In seasonPeak

None of Guildford's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Guildford's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Guildford?

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

4.8
Sightseeing
5th-best month of the year
1.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Guildford for sightseeing.

What to pack for Guildford in May

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

In May, Guildford sees daytime highs around 17°C and nights near 7°C. Worth packing: a warm layer, rain gear and sun protection. About 13 days see rain.

a warm layerrain gearsun protection

Sea temperature near Guildford in May

The nearest coast averages about 12°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 km away) is warmest in August at about 16°C and coldest in January near 7°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan7Bracing
Feb7Bracing
Mar8Bracing
Apr10Bracing
May12Bracing
Jun14Bracing
Jul16Cool
Aug16Cool
Sep14Bracing
Oct11Bracing
Nov9Bracing
Dec8Bracing

UV index in Guildford 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 Guildford peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Guildford in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Guildford is worst in August — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodAug 1517 µg/m³Dec 119 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar16Moderate
Apr16Moderate
May17Moderate
Jun15Moderate
Jul15Moderate
Aug18Moderate
Sep14Moderate
Oct13Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Guildford?

Guildford sits at 49.2°N, 122.8°W, 94 m above sea level, in Canada. The nearest listed city is Fraser Heights, 2.0 km away.

Topography around Guildford

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

Within 3 km, the terrain around Guildford has only modest variations in elevation — a maximum elevation change of 135 m around an average of 76 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 902 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,629 m.

The land around Guildford is covered by trees (52%) and artificial surfaces (37%) within 3 km, trees (40%), artificial surfaces (26%) and grassland (22%) within 16 km, and trees (52%) and water (30%) within 80 km.

3 km
135 m
16 km
902 m
80 km
2,629 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewaterwetland
May weather nearby: Fraser Heights 2.0 km · Fleetwood 3.0 km · Surrey City Centre 3.0 km · Whalley 5.0 km · Maillardville 7.0 km · Newton 7.0 km · Central Coquitlam 8.0 km · New Westminster 8.0 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 Guildford (49.1917°, -122.8°, elevation 94 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).