Blackburn weather in July

In July, Blackburn sees average daytime highs of 19°C and overnight lows near 12°C, with 99 mm of rain across 15.9 wet days and about 16.3 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 19°C through the month. The sky is clear or mostly clear about 11% of the time in July, and the air most often feels dry.

Daylight stretches from about 16 h 48 min at the start of July to 15 h 36 min by month's end. Set against the rest of the year, July is Blackburn's 2nd-clearest and 12th-windiest month. For the whole year in context, see Blackburn's year-round climate.

Daytime high
19°
1st warmest
Overnight low
12°
12th coldest
Rainfall
99 mm
15.9 wet days
Daylight
16 h 18 min
4:05 AM – 8:26 PM
Cloud cover
72%
2nd clearest
Wind
13 km/h
12th windiest
Solar energy
4.85 kWh/m²
Travel score
5.1
out of 10

Blackburn is town in Lancashire, England.

Density
5,980/km²
people per km²

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 19°C through the month.

A typical July day in Blackburn reaches about 19°C in the afternoon and slips back to 12°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11811
21811
31811
41811
51812
61812
71812
81812
91812
101812
111812
121912
131912
141912
151912
161912
171912
181912
191912
201912
211912
221912
231912
241912
251912
261912
271912
281912
291912
301912
311912

How July really feels in Blackburn

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.

Blackburn weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 10316.32.37.80.5
Feb / 89142.49.40.7
Mar / 8413.81.611.51.5
Apr12° / 7513.60.513.72.7
May15° / 8013.6015.63.9
Jun17° / 10°9114.3016.74.7
Jul19° / 12°9915.9016.35.1
Aug18° / 12°10816.4014.64.9
Sep16° / 10°9113.6012.54.4
Oct13° / 10815.40.110.23.0
Nov / 10716.40.58.31.5
Dec / 11916.21.67.30.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 18% of July, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22971
33070
43070
53070
62971
73070
83070
93070
103070
113070
123169
133169
143169
153169
163169
173070
183070
193070
203070
212971
222971
232872
242872
252872
262872
272872
282773
292773
302773
312872

Chance of precipitation in July

Any precipitation

Blackburn gets around 99 mm of rain over 15.9 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 51% and peaks near 53% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
151
251
352
452
552
652
751
851
951
1050
1150
1250
1350
1450
1549
1649
1749
1849
1949
2049
2150
2250
2351
2451
2552
2652
2752
2852
2953
3053
3153

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 65% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
178193
277203
376213
475223
574233
674233
773243
872253
971263
1071263
1169274
1269274
1368284
1468284
1566295
1665305
1765305
1863325
1962335
2061345
2160355
2259365
2358375
2456386
2556386
2655396
2755396
2854406
2954406
3054406
3155396

Wind in July

Winds average 13 km/h in July, the calmest month.

Across July, daily wind ranges from about 13 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
414light breeze
514light breeze
614light breeze
714light breeze
814light 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
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 h 48 min at the start of July to 15 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over July. Sunrise moves from 3:50 AM to 4:28 AM, and sunset from 8:36 PM to 8:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.83:508:36
216.83:518:36
316.73:528:36
416.73:528:35
516.73:538:35
616.73:548:34
716.63:558:34
816.63:568:33
916.63:578:32
1016.63:588:31
1116.53:598:31
1216.54:008:30
1316.54:018:29
1416.44:038:28
1516.44:048:27
1616.34:058:26
1716.34:078:25
1816.34:088:24
1916.24:098:22
2016.24:118:21
2116.14:128:20
2216.14:138:19
2316.04:158:17
2416.04:168:16
2515.94:188:14
2615.94:208:13
2715.84:218:11
2815.84:238:10
2915.74:248:08
3015.74:268:06
3115.64:288:04

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.85 kWh/m².

For context, solar energy here swings from a low near 0.49 kWh/m² to a high of 5.07 kWh/m² in June across the year — July's 4.85 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.7Bright
264.6Bright
274.6Bright
284.6Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in July

Is July a good time to visit Blackburn?

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

5.1
Sightseeing
1st-best month of the year
2.0
Beach & pool
1st-best month of the year

July is a reasonable time to visit Blackburn for sightseeing.

What to pack for Blackburn in July

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

In July, Blackburn sees daytime highs around 19°C and nights near 12°C. Pack rain gear. Worth having: sun protection. About 16 days see rain.

rain gearsun protection

Sea temperature near Blackburn 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 44 km away) is warmest in August at about 17°C and coldest in February near 6°C.

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

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan7Bracing
Feb6Bracing
Mar7Bracing
Apr9Bracing
May11Bracing
Jun14Bracing
Jul16Cool
Aug17Cool
Sep16Cool
Oct14Bracing
Nov11Bracing
Dec9Bracing

UV index in Blackburn in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Blackburn peaks around August 12 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 12UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May6High
Jun5High
Jul5High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low
Location & terrain

Where is Blackburn?

Blackburn sits at 53.8°N, 2.5°W, 121 m above sea level, in United Kingdom. The nearest listed city is Darwen, 6.0 km away.

Topography around Blackburn

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

Within 3 km, the terrain around Blackburn has only modest variations in elevation — a maximum elevation change of 160 m around an average of 150 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 458 m; within 80 km, large variations in elevation — a maximum elevation change of 791 m.

The land around Blackburn is covered by artificial surfaces (43%), trees (31%) and grassland (25%) within 3 km, grassland (62%) and trees (23%) within 16 km, and grassland (54%) within 80 km.

3 km
160 m
16 km
458 m
80 km
791 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Darwen 6.0 km · Accrington 8.0 km · Haslingden 12 km · Chorley 14 km · Rawtenstall 14 km · Preston 15 km · Leyland 15 km · Rossendale 15 km

United Kingdom travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G / M
230 V · 50 Hz
Prices
≈ 89% of US
price level, 2025
GDP per capita
$57,602
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2021
Road deaths
3.2
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 60%none 26%Muslim 4%other 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 Blackburn (53.75°, -2.4833°, elevation 121 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).