Saint Helier weather in July

In July, Saint Helier sees average daytime highs of 18°C and overnight lows near 16°C, with 48 mm of rain across 9.1 wet days and about 15.6 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 18°C through the month. The sky is clear or mostly clear about 38% of the time in July, and the air most often feels comfortable.

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

Daytime high: 18°; 2nd warmest
Overnight low: 16°; 11th coldest
Rainfall: 48 mm; 9.1 wet days
Daylight: 15 h 36 min; 4:25 AM – 8:03 PM
Cloud cover: 52%; 1st clearest
Wind: 21 km/h; 10th windiest
Solar energy: 6.09 kWh/m²
Travel score: 6.0; out of 10

Saint Helier is one of the twelve parishes and capital of Jersey in the Channel Islands.

Density: 2,642/km²; people per km²

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

← June Saint Helier year-round climate August →Best places to visit in July

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 18°C through the month.

A typical July day in Saint Helier reaches about 18°C in the afternoon and slips back to 16°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 20°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18
Avg low (°C)	15	15	15	15	15	15	15	15	15	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	17	17	17

	Avg high (°C)	Avg low (°C)
1	17	15
2	17	15
3	17	15
4	17	15
5	17	15
6	17	15
7	17	15
8	17	15
9	17	15
10	17	16
11	17	16
12	17	16
13	17	16
14	17	16
15	17	16
16	18	16
17	18	16
18	18	16
19	18	16
20	18	16
21	18	16
22	18	16
23	18	16
24	18	16
25	18	16
26	18	16
27	18	16
28	18	16
29	18	17
30	18	17
31	18	17

Saint Helier 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	9° / 7°	110	15.8	8.5	1.5
Feb	9° / 7°	81	12.9	9.8	1.4
Mar	9° / 8°	69	12.4	11.6	1.9
Apr	11° / 9°	57	10.5	13.4	2.7
May	13° / 11°	53	9.4	15	3.8
Jun	16° / 14°	50	8.7	15.9	5.0
Jul	18° / 16°	48	9.1	15.6	6.0
Aug	18° / 17°	63	9.8	14.2	6.1
Sep	17° / 16°	77	11	12.4	5.5
Oct	15° / 13°	122	15.5	10.5	4.0
Nov	12° / 10°	132	17.6	8.9	2.7
Dec	10° / 8°	138	16.7	8.1	1.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of July, with mostly cloudy or overcast conditions the remaining 43%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	56	56	56	57	58	58	59	58	58	59	59	59	59	58	58	58	57	57	57	57	56	56	56	56	57	57	56	56	57	56	56
Cloudier (%)	44	44	44	43	42	42	41	42	42	41	41	41	41	42	42	42	43	43	43	43	44	44	44	44	43	43	44	44	43	44	44

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	56	44
4	57	43
5	58	42
6	58	42
7	59	41
8	58	42
9	58	42
10	59	41
11	59	41
12	59	41
13	59	41
14	58	42
15	58	42
16	58	42
17	57	43
18	57	43
19	57	43
20	57	43
21	56	44
22	56	44
23	56	44
24	56	44
25	57	43
26	57	43
27	56	44
28	56	44
29	57	43
30	56	44
31	56	44

Chance of precipitation in July

Any precipitation

Saint Helier gets around 48 mm of rain over 9.1 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 29% and peaks near 32% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	31	32	32	32	32	32	32	32	31	31	30	29	29	28	28	27	27	26	26	26	26	26	26	26	26	26	26	27	27	28	28

	Rain chance (%)
1	31
2	32
3	32
4	32
5	32
6	32
7	32
8	32
9	31
10	31
11	30
12	29
13	29
14	28
15	28
16	27
17	27
18	26
19	26
20	26
21	26
22	26
23	26
24	26
25	26
26	26
27	26
28	27
29	27
30	28
31	28

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the comfortable band about 60% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	40	39	38	37	36	35	34	33	32	31	30	29	28	27	25	24	23	21	20	19	18	17	16	15	15	14	14	13	13	13	13
Comfortable (%)	54	54	55	56	57	58	58	59	60	60	61	61	61	61	62	62	62	63	63	63	63	63	63	63	62	62	61	61	60	59	58
Humid (%)	6	7	7	7	7	7	8	8	8	9	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29

	Dry (%)	Comfortable (%)	Humid (%)
1	40	54	6
2	39	54	7
3	38	55	7
4	37	56	7
5	36	57	7
6	35	58	7
7	34	58	8
8	33	59	8
9	32	60	8
10	31	60	9
11	30	61	9
12	29	61	10
13	28	61	11
14	27	61	12
15	25	62	13
16	24	62	14
17	23	62	15
18	21	63	16
19	20	63	17
20	19	63	18
21	18	63	19
22	17	63	20
23	16	63	21
24	15	63	22
25	15	62	23
26	14	62	24
27	14	61	25
28	13	61	26
29	13	60	27
30	13	59	28
31	13	58	29

Wind in July

Winds average 21 km/h in July.

Across July, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	20	20	20	20	20	20	20
Feels	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	21	breezy
2	21	breezy
3	21	breezy
4	21	breezy
5	21	breezy
6	21	breezy
7	21	breezy
8	21	breezy
9	21	breezy
10	21	breezy
11	21	breezy
12	21	breezy
13	21	breezy
14	21	breezy
15	21	breezy
16	21	breezy
17	21	breezy
18	21	breezy
19	20	breezy
20	20	breezy
21	20	breezy
22	20	breezy
23	20	breezy
24	20	breezy
25	20	light breeze
26	20	light breeze
27	20	light breeze
28	20	light breeze
29	20	light breeze
30	20	light breeze
31	20	light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 hours 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 60 minutes over July. Sunrise moves from 4:13 AM to 4:43 AM, and sunset from 8:11 PM to 7:46 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	16.0	16.0	15.9	15.9	15.9	15.9	15.9	15.8	15.8	15.8	15.8	15.7	15.7	15.7	15.7	15.6	15.6	15.6	15.5	15.5	15.5	15.4	15.4	15.3	15.3	15.3	15.2	15.2	15.1	15.1	15.0
Sunrise (AM)	4:13	4:13	4:14	4:15	4:15	4:16	4:17	4:18	4:18	4:19	4:20	4:21	4:22	4:23	4:24	4:25	4:26	4:27	4:28	4:30	4:31	4:32	4:33	4:34	4:36	4:37	4:38	4:39	4:41	4:42	4:43
Sunset (PM)	8:11	8:11	8:10	8:10	8:10	8:09	8:09	8:08	8:08	8:07	8:07	8:06	8:05	8:05	8:04	8:03	8:02	8:01	8:00	7:59	7:58	7:57	7:56	7:55	7:54	7:52	7:51	7:50	7:48	7:47	7:46

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	16.0	4:13	8:11
2	16.0	4:13	8:11
3	15.9	4:14	8:10
4	15.9	4:15	8:10
5	15.9	4:15	8:10
6	15.9	4:16	8:09
7	15.9	4:17	8:09
8	15.8	4:18	8:08
9	15.8	4:18	8:08
10	15.8	4:19	8:07
11	15.8	4:20	8:07
12	15.7	4:21	8:06
13	15.7	4:22	8:05
14	15.7	4:23	8:05
15	15.7	4:24	8:04
16	15.6	4:25	8:03
17	15.6	4:26	8:02
18	15.6	4:27	8:01
19	15.5	4:28	8:00
20	15.5	4:30	7:59
21	15.5	4:31	7:58
22	15.4	4:32	7:57
23	15.4	4:33	7:56
24	15.3	4:34	7:55
25	15.3	4:36	7:54
26	15.3	4:37	7:52
27	15.2	4:38	7:51
28	15.2	4:39	7:50
29	15.1	4:41	7:48
30	15.1	4:42	7:47
31	15.0	4:43	7:46

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.09 kWh/m².

For context, solar energy here swings from a low near 0.83 kWh/m² to a high of 6.27 kWh/m² in June across the year — July's 6.09 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.1	6.1	6.1	6.1	6.1	6.1	6.0	6.0	6.0	6.0	5.9	5.9	5.9	5.8	5.8	5.8
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	6.2	Intense
2	6.2	Intense
3	6.2	Intense
4	6.2	Intense
5	6.2	Intense
6	6.2	Intense
7	6.2	Intense
8	6.2	Intense
9	6.2	Intense
10	6.2	Intense
11	6.2	Intense
12	6.2	Intense
13	6.2	Intense
14	6.2	Intense
15	6.2	Intense
16	6.1	Intense
17	6.1	Intense
18	6.1	Intense
19	6.1	Intense
20	6.1	Intense
21	6.1	Intense
22	6.0	Intense
23	6.0	Intense
24	6.0	Bright
25	6.0	Bright
26	5.9	Bright
27	5.9	Bright
28	5.9	Bright
29	5.8	Bright
30	5.8	Bright
31	5.8	Bright

Planning a trip in July

Hazard calendar for Saint Helier

In seasonPeak

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

Saint Helier's rainy season runs August–March, 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 Saint Helier?

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

6.0

Sightseeing

2nd-best month of the year

1.7

Beach & pool

2nd-best month of the year

July is a reasonable time to visit Saint Helier for sightseeing.

What to pack for Saint Helier in July

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

In July, Saint Helier sees daytime highs around 18°C and nights near 16°C. Pack sun protection. Worth having: rain gear and a windbreaker. About 9 days see rain.

sun protectionrain geara windbreaker

Sea temperature near Saint Helier 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 offshore is warmest in August at about 18°C and coldest in February near 9°C.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	10	9	9	10	12	15	17	18	18	16	14	11
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Cool	Cool	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	10	Bracing
Feb	9	Bracing
Mar	9	Bracing
Apr	10	Bracing
May	12	Bracing
Jun	15	Bracing
Jul	17	Cool
Aug	18	Cool
Sep	18	Cool
Oct	16	Cool
Nov	14	Bracing
Dec	11	Bracing

UV index in Saint Helier 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 Saint Helier peaks around August 13 at about 7 (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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	3	5	6	7	6	7	5	3	1	1
Level	Low	Low	Moderate	Moderate	High	High	High	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	3	Moderate
Apr	5	Moderate
May	6	High
Jun	7	High
Jul	6	High
Aug	7	High
Sep	5	Moderate
Oct	3	Moderate
Nov	1	Low
Dec	1	Low

Location & terrain

Where is Saint Helier?

Saint Helier sits at 49.2°N, 2.1°W, 11 m above sea level, in Jersey. The nearest listed city is Saint Peter Port, 43 km away.

Topography around Saint Helier

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

Within 3 km, the terrain around Saint Helier has only modest variations in elevation — a maximum elevation change of 100 m around an average of 31 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 137 m; within 80 km, significant variations in elevation — a maximum elevation change of 290 m.

The land around Saint Helier is covered by water (32%), trees (22%) and artificial surfaces (21%) within 3 km, water (85%) within 16 km, and water (68%) within 80 km.

3 km

100 m

water 32%

16 km

137 m

water 85%

80 km

290 m

water 68%

treesgrasslandcroplandartificial surfacesbare terrainwater

← June Saint Helier year-round climate August →Best places to visit in July

July weather nearby: Saint Peter Port 43 km · Octeville 59 km · Saint-Malo 61 km · Équeurdreville-Hainneville 61 km · Cherbourg 61 km · Tourlaville 63 km · Saint-Lô 74 km · Saint-Brieuc 89 km

Jersey travel facts

Power plugs: Type G; 230 V · 50 Hz
Religion

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 Helier (49.188°, -2.1049°, elevation 11 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).

	Avg high (°C)	Avg low (°C)
1	17	15
2	17	15
3	17	15
4	17	15
5	17	15
6	17	15
7	17	15
8	17	15
9	17	15
10	17	16
11	17	16
12	17	16
13	17	16
14	17	16
15	17	16
16	18	16
17	18	16
18	18	16
19	18	16
20	18	16
21	18	16
22	18	16
23	18	16
24	18	16
25	18	16
26	18	16
27	18	16
28	18	16
29	18	17
30	18	17
31	18	17

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	56	44
4	57	43
5	58	42
6	58	42
7	59	41
8	58	42
9	58	42
10	59	41
11	59	41
12	59	41
13	59	41
14	58	42
15	58	42
16	58	42
17	57	43
18	57	43
19	57	43
20	57	43
21	56	44
22	56	44
23	56	44
24	56	44
25	57	43
26	57	43
27	56	44
28	56	44
29	57	43
30	56	44
31	56	44

	Rain chance (%)
1	31
2	32
3	32
4	32
5	32
6	32
7	32
8	32
9	31
10	31
11	30
12	29
13	29
14	28
15	28
16	27
17	27
18	26
19	26
20	26
21	26
22	26
23	26
24	26
25	26
26	26
27	26
28	27
29	27
30	28
31	28

	Dry (%)	Comfortable (%)	Humid (%)
1	40	54	6
2	39	54	7
3	38	55	7
4	37	56	7
5	36	57	7
6	35	58	7
7	34	58	8
8	33	59	8
9	32	60	8
10	31	60	9
11	30	61	9
12	29	61	10
13	28	61	11
14	27	61	12
15	25	62	13
16	24	62	14
17	23	62	15
18	21	63	16
19	20	63	17
20	19	63	18
21	18	63	19
22	17	63	20
23	16	63	21
24	15	63	22
25	15	62	23
26	14	62	24
27	14	61	25
28	13	61	26
29	13	60	27
30	13	59	28
31	13	58	29

	Avg high (°C)	Avg low (°C)
1	17	15
2	17	15
3	17	15
4	17	15
5	17	15
6	17	15
7	17	15
8	17	15
9	17	15
10	17	16
11	17	16
12	17	16
13	17	16
14	17	16
15	17	16
16	18	16
17	18	16
18	18	16
19	18	16
20	18	16
21	18	16
22	18	16
23	18	16
24	18	16
25	18	16
26	18	16
27	18	16
28	18	16
29	18	17
30	18	17
31	18	17

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	56	44
4	57	43
5	58	42
6	58	42
7	59	41
8	58	42
9	58	42
10	59	41
11	59	41
12	59	41
13	59	41
14	58	42
15	58	42
16	58	42
17	57	43
18	57	43
19	57	43
20	57	43
21	56	44
22	56	44
23	56	44
24	56	44
25	57	43
26	57	43
27	56	44
28	56	44
29	57	43
30	56	44
31	56	44

	Rain chance (%)
1	31
2	32
3	32
4	32
5	32
6	32
7	32
8	32
9	31
10	31
11	30
12	29
13	29
14	28
15	28
16	27
17	27
18	26
19	26
20	26
21	26
22	26
23	26
24	26
25	26
26	26
27	26
28	27
29	27
30	28
31	28

	Dry (%)	Comfortable (%)	Humid (%)
1	40	54	6
2	39	54	7
3	38	55	7
4	37	56	7
5	36	57	7
6	35	58	7
7	34	58	8
8	33	59	8
9	32	60	8
10	31	60	9
11	30	61	9
12	29	61	10
13	28	61	11
14	27	61	12
15	25	62	13
16	24	62	14
17	23	62	15
18	21	63	16
19	20	63	17
20	19	63	18
21	18	63	19
22	17	63	20
23	16	63	21
24	15	63	22
25	15	62	23
26	14	62	24
27	14	61	25
28	13	61	26
29	13	60	27
30	13	59	28
31	13	58	29

	Avg high (°C)	Avg low (°C)
1	17	15
2	17	15
3	17	15
4	17	15
5	17	15
6	17	15
7	17	15
8	17	15
9	17	15
10	17	16
11	17	16
12	17	16
13	17	16
14	17	16
15	17	16
16	18	16
17	18	16
18	18	16
19	18	16
20	18	16
21	18	16
22	18	16
23	18	16
24	18	16
25	18	16
26	18	16
27	18	16
28	18	16
29	18	17
30	18	17
31	18	17

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	56	44
4	57	43
5	58	42
6	58	42
7	59	41
8	58	42
9	58	42
10	59	41
11	59	41
12	59	41
13	59	41
14	58	42
15	58	42
16	58	42
17	57	43
18	57	43
19	57	43
20	57	43
21	56	44
22	56	44
23	56	44
24	56	44
25	57	43
26	57	43
27	56	44
28	56	44
29	57	43
30	56	44
31	56	44

	Rain chance (%)
1	31
2	32
3	32
4	32
5	32
6	32
7	32
8	32
9	31
10	31
11	30
12	29
13	29
14	28
15	28
16	27
17	27
18	26
19	26
20	26
21	26
22	26
23	26
24	26
25	26
26	26
27	26
28	27
29	27
30	28
31	28

	Dry (%)	Comfortable (%)	Humid (%)
1	40	54	6
2	39	54	7
3	38	55	7
4	37	56	7
5	36	57	7
6	35	58	7
7	34	58	8
8	33	59	8
9	32	60	8
10	31	60	9
11	30	61	9
12	29	61	10
13	28	61	11
14	27	61	12
15	25	62	13
16	24	62	14
17	23	62	15
18	21	63	16
19	20	63	17
20	19	63	18
21	18	63	19
22	17	63	20
23	16	63	21
24	15	63	22
25	15	62	23
26	14	62	24
27	14	61	25
28	13	61	26
29	13	60	27
30	13	59	28
31	13	58	29