Saint-Omer weather in July

In July, Saint-Omer sees average daytime highs of 22°C and overnight lows near 14°C, with 59 mm of rain across 11 wet days and about 15.8 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 23°C by the end. The sky is clear or mostly clear about 21% of the time in July, and the air most often feels comfortable.

Daylight stretches from about 16 h 12 min at the start of July to 15 h 12 min by month's end. Set against the rest of the year, July is Saint-Omer's 1st-clearest and 11th-windiest month. For the whole year in context, see Saint-Omer's year-round climate.

Daytime high
22°
1st warmest
Overnight low
14°
11th coldest
Rainfall
59 mm
11 wet days
Daylight
15 h 54 min
5:01 AM – 8:52 PM
Cloud cover
63%
1st clearest
Wind
13 km/h
11th windiest
Solar energy
5.43 kWh/m²
Travel score
6.4
out of 10
Air quality
Good
PM10 19.4 µg/m³ · 2019

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 23°C by the end.

A typical July day in Saint-Omer reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 27°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12113
22113
32113
42113
52113
62113
72113
82113
92113
102114
112114
122114
132114
142114
152214
162214
172214
182214
192214
202214
212214
222214
232214
242214
252214
262314
272314
282314
292314
302314
312314

How July really feels in Saint-Omer

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.

Saint-Omer weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 621218.20.7
Feb / 5310.61.19.71.0
Mar10° / 5110.90.811.52.3
Apr14° / 5211.10.113.53.7
May17° / 6511.3015.25.1
Jun19° / 12°6310.3016.26.0
Jul22° / 14°5911015.86.4
Aug22° / 14°7111.2014.36.4
Sep19° / 12°5710.1012.45.8
Oct15° / 6512010.44.1
Nov10° / 6812.70.38.72.1
Dec / 7512.61.17.80.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of July, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34060
44060
54060
64060
74060
84060
94060
103961
113961
124159
134159
144159
154258
164258
174357
184357
194555
204555
214654
224654
234654
244654
254753
264753
274753
284753
294654
304654
314555

Chance of precipitation in July

Any precipitation

Saint-Omer gets around 59 mm of rain over 11 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 35% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
438
538
638
738
838
938
1037
1137
1236
1336
1435
1534
1634
1734
1833
1933
2033
2133
2233
2333
2433
2533
2633
2734
2834
2934
3035
3135

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 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1553960
2544060
3514171
4504271
5504371
6494471
7484471
8474571
9464581
10454681
11454691
12444791
13434791
144247101
154148111
164048111
173948121
183848130
193749130
203749141
213649151
223549151
233549161
243449161
253450161
263350161
273350161
283251161
293251161
303152161
313152161

Wind in July

Winds average 13 km/h in July.

Across July, daily wind ranges from about 12 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
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
614light breeze
714light breeze
814light breeze
914light 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
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 h 12 min at the start of July to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over July. Sunrise moves from 4:48 AM to 5:20 AM, and sunset from 9:01 PM to 8:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.24:489:01
216.24:489:01
316.24:499:00
416.24:509:00
516.24:519:00
616.14:518:59
716.14:528:59
816.14:538:58
916.14:548:58
1016.04:558:57
1116.04:568:56
1216.04:578:56
1316.04:588:55
1415.94:598:54
1515.95:008:53
1615.95:018:52
1715.85:028:51
1815.85:038:50
1915.75:048:49
2015.75:068:48
2115.75:078:47
2215.65:088:46
2315.65:098:45
2415.55:118:43
2515.55:128:42
2615.55:138:41
2715.45:158:39
2815.45:168:38
2915.35:188:37
3015.35:198:35
3115.25:208:34

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.43 kWh/m².

For context, solar energy here swings from a low near 0.68 kWh/m² to a high of 5.56 kWh/m² in June across the year — July's 5.43 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.2Bright
Planning a trip in July

Is July a good time to visit Saint-Omer?

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

6.4
Sightseeing
1st-best month of the year
4.3
Beach & pool
1st-best month of the year

July is a reasonable time to visit Saint-Omer for sightseeing.

What to pack for Saint-Omer in July

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

In July, Saint-Omer sees daytime highs around 22°C and nights near 14°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Saint-Omer 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 43 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
Mar7Bracing
Apr9Bracing
May12Bracing
Jun15Bracing
Jul17Cool
Aug18Cool
Sep18Cool
Oct15Cool
Nov13Bracing
Dec10Bracing

UV index in Saint-Omer 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-Omer peaks around June 22 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 22UV 6Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul6High
Aug7High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Saint-Omer?

Saint-Omer sits at 50.7°N, 2.3°E, 10 m above sea level, in France. The nearest listed city is Hazebrouck, 20 km away.

Topography around Saint-Omer

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

Within 3 km, the terrain around Saint-Omer has only modest variations in elevation — a maximum elevation change of 85 m around an average of 18 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 206 m; within 80 km, significant variations in elevation — a maximum elevation change of 272 m.

The land around Saint-Omer is covered by trees (25%), artificial surfaces (25%) and grassland (24%) within 3 km, cropland (57%) within 16 km, and cropland (41%) and water (31%) within 80 km.

3 km
85 m
16 km
206 m
80 km
272 m
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Hazebrouck 20 km · Grande-Synthe 30 km · Coudekerque-Branche 32 km · Saint-Pol-sur-Mer 32 km · Dunkirk 33 km · Poperinge 35 km · Bruay-la-Buissière 36 km · Béthune 36 km

France travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 77% of US
price level, 2025
GDP per capita
$48,986
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.3
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 539
Religion
Roman Catholic 47%none 33%Muslim 4%Protestant 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 Saint-Omer (50.7483°, 2.2609°, elevation 10 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).