Istres weather in January

In January, Istres sees average daytime highs of 12°C and overnight lows near 4°C, with 52 mm of precipitation across 6.5 wet days and about 9.1 hours of daylight. It is the 12th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 12°C through the month. The sky is clear or mostly clear about 46% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 48 min at the start of January to 9 h 36 min by month's end. Set against the rest of the year, January is Istres's 7th-clearest and 6th-windiest month. For the whole year in context, see Istres's year-round climate.

Daytime high: 12°; 12th warmest
Overnight low: 4°; 1st coldest
Precipitation: 52 mm; 6.5 wet days
Daylight: 9 h 06 min; 8:16 AM – 5:22 PM
Cloud cover: 48%; 7th clearest
Wind: 16 km/h; 6th windiest
Solar energy: 1.87 kWh/m²
Travel score: 3.4; out of 10

← December Istres year-round climate February →Best places to visit in January

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 12°C through the month.

A typical January day in Istres reaches about 12°C in the afternoon and slips back to 4°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 15°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

	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)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12
Avg low (°C)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4

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

Istres weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	12° / 4°	52	6.5	9.1	3.4
Feb	13° / 4°	38	5.4	10.2	4.1
Mar	16° / 7°	37	5.7	11.6	6.0
Apr	19° / 10°	60	8	13.2	6.7
May	23° / 14°	50	6.5	14.5	7.5
Jun	28° / 18°	27	4.3	15.2	7.1
Jul	31° / 20°	15	2.8	14.9	5.9
Aug	30° / 20°	23	3.6	13.8	5.9
Sep	26° / 16°	74	6.3	12.3	7.5
Oct	21° / 13°	82	8.4	10.8	6.8
Nov	16° / 8°	85	9.4	9.5	5.0
Dec	12° / 5°	50	7	8.8	3.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 42%.

	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	57	57	56	56	56	57	57	57	56	56	56	56	56	57	57	58	58	58	58	59	59	59	59	59	60	60	60	61	60
Cloudier (%)	44	44	43	43	44	44	44	43	43	43	44	44	44	44	44	43	43	42	42	42	42	41	41	41	41	41	40	40	40	39	40

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	57	43
4	57	43
5	56	44
6	56	44
7	56	44
8	57	43
9	57	43
10	57	43
11	56	44
12	56	44
13	56	44
14	56	44
15	56	44
16	57	43
17	57	43
18	58	42
19	58	42
20	58	42
21	58	42
22	59	41
23	59	41
24	59	41
25	59	41
26	59	41
27	60	40
28	60	40
29	60	40
30	61	39
31	60	40

Chance of precipitation in January

Any precipitation

Istres gets around 52 mm of rain and snow over 6.5 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 21% and peaks near 22% on the wettest days, and about 0 day brings snow.

	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 (%)	21	21	21	21	21	21	21	21	21	21	21	22	22	22	22	22	22	22	22	22	22	21	21	21	21	20	20	20	20	20	20

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

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 100% 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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in January

Winds average 16 km/h in January.

Across January, daily wind ranges from about 15 km/h on the calmest days to 16 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)	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	16	16	16	16	16	16	16	16	16	16	16	16	16	16
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

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

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 48 min at the start of January to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 8:19 AM to 8:06 AM, and sunset from 5:08 PM to 5:41 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)	8.8	8.8	8.8	8.9	8.9	8.9	8.9	8.9	8.9	9.0	9.0	9.0	9.0	9.1	9.1	9.1	9.1	9.2	9.2	9.2	9.2	9.3	9.3	9.3	9.4	9.4	9.4	9.5	9.5	9.6	9.6
Sunrise (AM)	8:19	8:19	8:19	8:19	8:19	8:19	8:19	8:19	8:18	8:18	8:18	8:18	8:17	8:17	8:17	8:16	8:16	8:15	8:15	8:14	8:14	8:13	8:12	8:12	8:11	8:10	8:09	8:08	8:08	8:07	8:06
Sunset (PM)	5:08	5:08	5:09	5:10	5:11	5:12	5:13	5:14	5:15	5:16	5:17	5:18	5:19	5:20	5:21	5:22	5:24	5:25	5:26	5:27	5:28	5:30	5:31	5:32	5:33	5:35	5:36	5:37	5:38	5:40	5:41

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	8.8	8:19	5:08
2	8.8	8:19	5:08
3	8.8	8:19	5:09
4	8.9	8:19	5:10
5	8.9	8:19	5:11
6	8.9	8:19	5:12
7	8.9	8:19	5:13
8	8.9	8:19	5:14
9	8.9	8:18	5:15
10	9.0	8:18	5:16
11	9.0	8:18	5:17
12	9.0	8:18	5:18
13	9.0	8:17	5:19
14	9.1	8:17	5:20
15	9.1	8:17	5:21
16	9.1	8:16	5:22
17	9.1	8:16	5:24
18	9.2	8:15	5:25
19	9.2	8:15	5:26
20	9.2	8:14	5:27
21	9.2	8:14	5:28
22	9.3	8:13	5:30
23	9.3	8:12	5:31
24	9.3	8:12	5:32
25	9.4	8:11	5:33
26	9.4	8:10	5:35
27	9.4	8:09	5:36
28	9.5	8:08	5:37
29	9.5	8:08	5:38
30	9.6	8:07	5:40
31	9.6	8:06	5:41

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.87 kWh/m².

For context, solar energy here swings from a low near 1.6 kWh/m² to a high of 7.31 kWh/m² in July across the year — January's 1.87 kWh/m² sits near the bottom.

	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)	1.6	1.6	1.6	1.6	1.6	1.7	1.7	1.7	1.7	1.7	1.7	1.8	1.8	1.8	1.8	1.8	1.9	1.9	1.9	1.9	2.0	2.0	2.0	2.1	2.1	2.1	2.2	2.2	2.2	2.3	2.3
Level	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	1.6	Dim
2	1.6	Dim
3	1.6	Dim
4	1.6	Dim
5	1.6	Dim
6	1.7	Dim
7	1.7	Dim
8	1.7	Dim
9	1.7	Dim
10	1.7	Dim
11	1.7	Dim
12	1.8	Dim
13	1.8	Dim
14	1.8	Dim
15	1.8	Dim
16	1.8	Dim
17	1.9	Dim
18	1.9	Dim
19	1.9	Dim
20	1.9	Dim
21	2.0	Dim
22	2.0	Moderate
23	2.0	Moderate
24	2.1	Moderate
25	2.1	Moderate
26	2.1	Moderate
27	2.2	Moderate
28	2.2	Moderate
29	2.2	Moderate
30	2.3	Moderate
31	2.3	Moderate

Planning a trip in January

Is January a good time to visit Istres?

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

3.4

Sightseeing

12th-best month of the year

0.0

Beach & pool

12th-best month of the year

January is a weaker month for outdoor sightseeing in Istres.

What to pack for Istres in January

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

In January, Istres sees daytime highs around 12°C and nights near 4°C. Pack a warm layer. About 7 days see rain.

a warm layer

Sea temperature near Istres in January

The nearest coast averages about 13°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in August at about 22°C and coldest in February near 12°C.

It's comfortable for a long swim from Jun 28 to Sep 24 — about 2.9 months when the water holds above 20°C.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	13	12	13	14	16	19	21	22	21	19	17	14
Comfort	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Refreshing	Refreshing	Refreshing	Cool	Cool	Bracing

	Sea temperature (°C)	Comfort
Jan	13	Bracing
Feb	12	Bracing
Mar	13	Bracing
Apr	14	Bracing
May	16	Cool
Jun	19	Cool
Jul	21	Refreshing
Aug	22	Refreshing
Sep	21	Refreshing
Oct	19	Cool
Nov	17	Cool
Dec	14	Bracing

UV index in Istres in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Istres peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	4	6	6	7	9	7	5	3	2	1
Level	Low	Moderate	Moderate	High	High	Very high	Very high	High	High	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Moderate
Mar	4	Moderate
Apr	6	High
May	6	High
Jun	7	Very high
Jul	9	Very high
Aug	7	High
Sep	5	High
Oct	3	Moderate
Nov	2	Low
Dec	1	Low

Air quality in Istres in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Istres is worst in March — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	13	15	17	17	15	16	14	15	13	13	11	12
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Moderate

	PM2.5 (µg/m³)	Level
Jan	13	Moderate
Feb	15	Moderate
Mar	17	Moderate
Apr	17	Moderate
May	15	Moderate
Jun	16	Moderate
Jul	14	Moderate
Aug	15	Moderate
Sep	13	Moderate
Oct	13	Moderate
Nov	11	Good
Dec	12	Moderate

Location & terrain

Where is Istres?

Istres sits at 43.5°N, 5.0°E, 14 m above sea level, in France. The nearest listed city is Miramas, 8.0 km away.

Topography around Istres

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

Within 3 km, the terrain around Istres has only modest variations in elevation — a maximum elevation change of 116 m around an average of 21 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 201 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,897 m.

The land around Istres is covered by water (30%), artificial surfaces (28%) and trees (20%) within 3 km, grassland (26%), water (24%) and trees (20%) within 16 km, and trees (38%) and water (31%) within 80 km.

3 km

116 m

water 30%

16 km

201 m

grassland 26%

80 km

1,897 m

trees 38%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland

← December Istres year-round climate February →Best places to visit in January

January weather nearby: Miramas 8.0 km · Fos-sur-Mer 9.0 km · Port-de-Bouc 12 km · Martigues 13 km · Salon-de-Provence 17 km · Marignane 21 km · Vitrolles 22 km · Les Pennes-Mirabeau 28 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

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 Istres (43.5134°, 4.9875°, 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. 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	12	4
2	12	4
3	12	4
4	12	4
5	12	4
6	12	4
7	12	4
8	12	4
9	12	4
10	12	4
11	12	4
12	12	4
13	12	4
14	12	4
15	12	4
16	12	4
17	12	4
18	12	4
19	12	4
20	12	4
21	12	4
22	12	4
23	12	4
24	12	4
25	12	4
26	12	4
27	12	4
28	12	4
29	12	4
30	12	4
31	12	4

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	57	43
4	57	43
5	56	44
6	56	44
7	56	44
8	57	43
9	57	43
10	57	43
11	56	44
12	56	44
13	56	44
14	56	44
15	56	44
16	57	43
17	57	43
18	58	42
19	58	42
20	58	42
21	58	42
22	59	41
23	59	41
24	59	41
25	59	41
26	59	41
27	60	40
28	60	40
29	60	40
30	61	39
31	60	40

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

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

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	57	43
4	57	43
5	56	44
6	56	44
7	56	44
8	57	43
9	57	43
10	57	43
11	56	44
12	56	44
13	56	44
14	56	44
15	56	44
16	57	43
17	57	43
18	58	42
19	58	42
20	58	42
21	58	42
22	59	41
23	59	41
24	59	41
25	59	41
26	59	41
27	60	40
28	60	40
29	60	40
30	61	39
31	60	40

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

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

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	57	43
4	57	43
5	56	44
6	56	44
7	56	44
8	57	43
9	57	43
10	57	43
11	56	44
12	56	44
13	56	44
14	56	44
15	56	44
16	57	43
17	57	43
18	58	42
19	58	42
20	58	42
21	58	42
22	59	41
23	59	41
24	59	41
25	59	41
26	59	41
27	60	40
28	60	40
29	60	40
30	61	39
31	60	40

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100