Caerphilly weather in July

In July, Caerphilly sees average daytime highs of 19°C and overnight lows near 13°C, with 74 mm of rain across 11.7 wet days and about 15.9 hours of daylight. It is the 1st-warmest and 7th-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 18% of the time in July, and the air most often feels dry.

Daylight stretches from about 16 h 24 min at the start of July to 15 h 18 min by month's end. Set against the rest of the year, July is Caerphilly's 1st-clearest and 10th-windiest month. For the whole year in context, see Caerphilly's year-round climate.

Daytime high
19°
1st warmest
Overnight low
13°
12th coldest
Rainfall
74 mm
11.7 wet days
Daylight
16 hours
4:19 AM – 8:18 PM
Cloud cover
67%
1st clearest
Wind
15 km/h
10th windiest
Solar energy
5.03 kWh/m²
Travel score
5.8
out of 10

Caerphilly is town and community in Wales.

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 Caerphilly reaches about 19°C in the afternoon and slips back to 13°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 16°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)
11913
21913
31913
41913
51913
61913
71913
81913
91913
101913
111913
121913
131913
141913
151913
161913
171914
181914
191914
202014
212014
222014
232014
242014
252014
262014
272014
282014
292014
302014
312014

How July really feels in Caerphilly

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.

Caerphilly weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9514.50.98.11.0
Feb / 7411.20.99.61.1
Mar / 6811.70.511.51.9
Apr12° / 7011.60.113.63.0
May15° / 7312.3015.34.2
Jun17° / 12°7111016.35.3
Jul19° / 13°7411.7015.95.8
Aug19° / 13°8712.3014.45.7
Sep17° / 11°7411012.45.2
Oct14° / 10614010.43.5
Nov10° / 10214.50.18.62.1
Dec / 10713.70.67.71.2

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33565
43565
53565
63763
73763
83763
93763
103763
113763
123862
133862
143961
153961
164060
174060
184060
194060
204159
214159
224159
234159
244060
254060
264060
274060
284060
294060
303961
313961

Chance of precipitation in July

Any precipitation

Caerphilly gets around 74 mm of rain over 11.7 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 37% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
242
342
442
541
641
740
840
939
1038
1137
1236
1335
1435
1534
1633
1733
1833
1933
2033
2134
2234
2335
2435
2536
2637
2738
2839
2939
3040
3141

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 52% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
166313
265323
363343
462353
560364
660364
759374
858384
956395
1056395
1155405
1254406
1354406
1453416
1553416
1652426
1750437
1850447
1949447
2048457
2147467
2246477
2346477
2445487
2544497
2643498
2743498
2842498
2942498
3042499
3142489

Wind in July

Winds average 15 km/h in July.

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

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light 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
3115light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 h 24 min at the start of July to 15 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over July. Sunrise moves from 4:05 AM to 4:39 AM, and sunset from 8:27 PM to 7:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.44:058:27
216.34:068:27
316.34:078:26
416.34:078:26
516.34:088:26
616.34:098:25
716.24:108:25
816.24:118:24
916.24:128:24
1016.24:138:23
1116.14:148:22
1216.14:158:21
1316.14:168:21
1416.04:178:20
1516.04:188:19
1616.04:198:18
1715.94:208:17
1815.94:218:16
1915.94:238:15
2015.84:248:14
2115.84:258:13
2215.74:278:11
2315.74:288:10
2415.74:298:09
2515.64:318:07
2615.64:328:06
2715.54:338:05
2815.54:358:03
2915.44:368:02
3015.44:388:00
3115.34:397:59

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.03 kWh/m².

For context, solar energy here swings from a low near 0.65 kWh/m² to a high of 5.28 kWh/m² in June across the year — July's 5.03 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
234.9Bright
244.9Bright
254.9Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.7Bright
314.7Bright
Planning a trip in July

Is July a good time to visit Caerphilly?

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

5.8
Sightseeing
1st-best month of the year
2.6
Beach & pool
1st-best month of the year

July is a reasonable time to visit Caerphilly for sightseeing.

What to pack for Caerphilly in July

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

In July, Caerphilly sees daytime highs around 19°C and nights near 13°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Caerphilly in July

The nearest coast averages about 17°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 23 km away) is warmest in August at about 18°C and coldest in February near 7°C.

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

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan8Bracing
Feb7Bracing
Mar8Bracing
Apr9Bracing
May12Bracing
Jun15Cool
Jul17Cool
Aug18Cool
Sep17Cool
Oct15Bracing
Nov12Bracing
Dec9Bracing

UV index in Caerphilly in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Caerphilly peaks around August 13 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. 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 13UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug7High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Caerphilly?

Caerphilly sits at 51.6°N, 3.2°W, 94 m above sea level, in United Kingdom. The nearest listed city is Risca, 9.0 km away.

Topography around Caerphilly

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

Within 3 km, the terrain around Caerphilly has only modest variations in elevation — a maximum elevation change of 222 m around an average of 142 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 473 m; within 80 km, large variations in elevation — a maximum elevation change of 864 m.

The land around Caerphilly is covered by trees (50%), grassland (29%) and artificial surfaces (20%) within 3 km, grassland (39%) and trees (38%) within 16 km, and grassland (51%) within 80 km.

3 km
222 m
16 km
473 m
80 km
864 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Risca 9.0 km · Pontypridd 9.0 km · Gelligaer 10 km · Blackwood 10 km · Cardiff 11 km · Newport 15 km · Penarth 15 km · Cwmbran 16 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 Caerphilly (51.5745°, -3.218°, 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).