Duncan weather in July

In July, Duncan sees average daytime highs of 23°C and overnight lows near 13°C, with 27 mm of rain across 5 wet days and about 15.5 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 42% of the time in July, and the air most often feels dry.

Daylight stretches from about 15 h 54 min at the start of July to 15 hours by month's end. Set against the rest of the year, July is Duncan's 1st-clearest and 10th-windiest month. For the whole year in context, see Duncan's year-round climate.

Daytime high
23°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
27 mm
5 wet days
Daylight
15 h 36 min
4:33 AM – 8:08 PM
Cloud cover
46%
1st clearest
Wind
6 km/h
10th windiest
Solar energy
6.62 kWh/m²
Travel score
7.8
out of 10

Duncan is city in British Columbia, Canada.

Air quality
Good
PM2.5 7.5 µg/m³ · 2019
Density
10,724/km²
people per km²
Founded
1912

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 21°C in the first days to 24°C by the end.

A typical July day in Duncan reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 29°C. Set against its neighbours, July runs about 4°C warmer than June and on par with August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12112
22112
32112
42212
52212
62212
72212
82212
92212
102212
112212
122312
132312
142313
152313
162313
172313
182313
192313
202413
212413
222413
232413
242413
252413
262413
272413
282413
292413
302413
312413

How July really feels in Duncan

Once humidity and wind are folded in, July 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

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

Duncan weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 21317.87.18.50.1
Feb / 13314.46.39.80.7
Mar / 15717.46.611.61.4
Apr12° / 11015.61.713.42.8
May16° / 7011.40.1155.0
Jun19° / 10°529.3015.96.2
Jul23° / 13°275015.57.8
Aug23° / 13°395.1014.27.9
Sep19° / 10°668.7012.46.5
Oct13° / 14013.70.210.53.4
Nov / 21218.13.891.0
Dec / 21017.78.68.10.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of July, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24555
34753
44951
54951
65050
75149
85149
95347
105446
115545
125644
135743
145842
155941
166040
176139
186238
196337
206436
216634
226634
236832
246832
257030
267030
277030
287129
297129
307129
317129

Chance of precipitation in July

Any precipitation

Duncan gets around 27 mm of rain over 5 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 17% and peaks near 23% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
123
223
322
422
522
622
721
821
921
1021
1120
1220
1320
1419
1519
1618
1717
1817
1916
2015
2115
2214
2313
2412
2512
2611
2711
2811
2911
3011
3111

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1937
2928
3928
4919
5919
69010
79010
88911
98812
108812
118713
128614
138515
148416
158317
168218
178218
188119
198119
208020
218020
227921
237921
247921
257921
267921
277921
287921
297822
307822
317822

Wind in July

Winds average 6 km/h in July.

Across July, 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
146calm
156calm
166calm
176calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

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

Days shrink by about 54 minutes over July. Sunrise moves from 4:21 AM to 4:51 AM, and sunset from 8:15 PM to 7:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.94:218:15
215.94:228:15
315.94:228:15
415.94:238:15
515.84:248:14
615.84:248:14
715.84:258:13
815.84:268:13
915.84:278:12
1015.74:288:12
1115.74:288:11
1215.74:298:11
1315.74:308:10
1415.64:318:09
1515.64:328:08
1615.64:338:08
1715.54:348:07
1815.54:358:06
1915.54:368:05
2015.44:388:04
2115.44:398:03
2215.44:408:02
2315.34:418:01
2415.34:428:00
2515.24:447:58
2615.24:457:57
2715.24:467:56
2815.14:477:55
2915.14:497:53
3015.04:507:52
3115.04:517:51

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.62 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 0.83 kWh/m² to a high of 6.62 kWh/m² in July across the year — July's 6.62 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.7Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
316.5Intense
Planning a trip in July

Hazard calendar for Duncan

In seasonPeak

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

Duncan'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 July a good time to visit Duncan?

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

7.8
Sightseeing
2nd-best month of the year
5.9
Beach & pool
2nd-best month of the year

July is one of the better times to visit Duncan for general sightseeing.

What to pack for Duncan in July

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

In July, Duncan sees daytime highs around 23°C and nights near 13°C. Pack sun protection. Worth having: light clothes. About 5 days see rain.

sun protectionlight clothes

Sea temperature near Duncan in July

The nearest coast averages about 16°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 26 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 Duncan in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Duncan peaks around July 18 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 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 18UV 8Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Duncan?

Duncan sits at 48.8°N, 123.7°W, 14 m above sea level, in Canada. The nearest listed city is North Cowichan, 7.0 km away.

Topography around Duncan

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

Within 3 km, the terrain around Duncan has only modest variations in elevation — a maximum elevation change of 113 m around an average of 35 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,155 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,571 m.

The land around Duncan is covered by trees (54%) and grassland (21%) within 3 km, trees (73%) within 16 km, and water (48%) and trees (45%) within 80 km.

3 km
113 m
16 km
1,155 m
80 km
1,571 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: North Cowichan 7.0 km · Central Saanich 32 km · Saanich 36 km · Langford 40 km · Carey 41 km · Colwood 42 km · Gordon Head 44 km · Esquimalt 44 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 Duncan (48.7829°, -123.7027°, elevation 14 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).