Mont-de-Marsan weather in May

In May, Mont-de-Marsan sees average daytime highs of 22°C and overnight lows near 12°C, with 72 mm of rain across 11.9 wet days and about 14.5 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 20% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 15 hours by month's end. Set against the rest of the year, May is Mont-de-Marsan's 9th-clearest and 7th-windiest month. For the whole year in context, see Mont-de-Marsan's year-round climate.

Daytime high: 22°; 5th warmest
Overnight low: 12°; 8th coldest
Rainfall: 72 mm; 11.9 wet days
Daylight: 14 h 30 min; 5:42 AM – 8:14 PM
Cloud cover: 65%; 9th clearest
Wind: 9 km/h; 7th windiest
Solar energy: 5.58 kWh/m²
Travel score: 6.3; out of 10

Air quality: Good; PM2.5 7.6 µg/m³ · 2019

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

← April Mont-de-Marsan year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 21°C in the first days to 24°C by the end.

A typical May day in Mont-de-Marsan reaches about 22°C in the afternoon and slips back to 12°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 29°C. Set against its neighbours, May runs about 4°C warmer than April and about 4°C cooler than June.

	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)	20	21	21	21	21	21	21	21	21	22	22	22	22	22	22	22	23	23	23	23	23	23	24	24	24	24	24	24	24	24	24
Avg low (°C)	10	10	10	10	10	10	11	11	11	11	11	11	11	11	11	12	12	12	12	12	12	12	12	12	13	13	13	13	13	13	13

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

Mont-de-Marsan weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	11° / 4°	66	11	9.1	2.6
Feb	13° / 4°	52	9.5	10.2	3.4
Mar	16° / 6°	56	10.7	11.6	5.1
Apr	19° / 8°	74	12.2	13.2	5.7
May	22° / 12°	72	11.9	14.5	6.3
Jun	26° / 15°	59	9.2	15.2	6.7
Jul	29° / 16°	45	7.8	14.9	6.2
Aug	29° / 16°	51	7.7	13.8	6.1
Sep	25° / 14°	50	8.3	12.3	7.0
Oct	21° / 11°	62	10.2	10.8	6.3
Nov	15° / 7°	74	11.5	9.5	4.2
Dec	12° / 4°	68	11	8.8	2.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to open up as the month goes on.

	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 (%)	33	33	33	33	33	33	33	33	34	34	34	35	35	35	36	36	37	37	38	39	39	40	41	42	42	42	42	42	41	41	41
Cloudier (%)	67	67	67	67	67	67	67	67	66	66	66	65	65	65	64	64	63	63	62	61	61	60	59	58	58	58	58	58	59	59	59

	Clearer (%)	Cloudier (%)
1	33	67
2	33	67
3	33	67
4	33	67
5	33	67
6	33	67
7	33	67
8	33	67
9	34	66
10	34	66
11	34	66
12	35	65
13	35	65
14	35	65
15	36	64
16	36	64
17	37	63
18	37	63
19	38	62
20	39	61
21	39	61
22	40	60
23	41	59
24	42	58
25	42	58
26	42	58
27	42	58
28	42	58
29	41	59
30	41	59
31	41	59

Chance of precipitation in May

Any precipitation

Mont-de-Marsan gets around 72 mm of rain over 11.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 45% on the wettest days. The odds ease toward the end of the month.

	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 (%)	45	45	45	45	44	44	43	42	42	41	41	40	40	39	38	38	37	37	36	36	36	36	36	36	36	36	36	36	36	37	37

	Rain chance (%)
1	45
2	45
3	45
4	45
5	44
6	44
7	43
8	42
9	42
10	41
11	41
12	40
13	40
14	39
15	38
16	38
17	37
18	37
19	36
20	36
21	36
22	36
23	36
24	36
25	36
26	36
27	36
28	36
29	36
30	37
31	37

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 75% 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 (%)	89	88	87	86	85	84	83	83	82	82	80	80	79	79	79	77	77	76	75	75	73	72	70	68	67	64	63	61	59	58	57
Comfortable (%)	11	11	12	13	14	15	16	16	17	17	18	18	19	19	19	20	20	20	21	21	22	23	24	25	26	28	29	30	31	32	32
Humid (%)	0	1	1	1	1	1	1	1	1	1	2	2	2	2	2	3	3	4	4	4	5	5	6	7	7	8	8	9	10	10	11

	Dry (%)	Comfortable (%)	Humid (%)
1	89	11	0
2	88	11	1
3	87	12	1
4	86	13	1
5	85	14	1
6	84	15	1
7	83	16	1
8	83	16	1
9	82	17	1
10	82	17	1
11	80	18	2
12	80	18	2
13	79	19	2
14	79	19	2
15	79	19	2
16	77	20	3
17	77	20	3
18	76	20	4
19	75	21	4
20	75	21	4
21	73	22	5
22	72	23	5
23	70	24	6
24	68	25	7
25	67	26	7
26	64	28	8
27	63	29	8
28	61	30	9
29	59	31	10
30	58	32	10
31	57	32	11

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 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)	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	8	8
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 6:02 AM to 5:29 AM, and sunset from 7:57 PM to 8:29 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)	13.9	14.0	14.0	14.1	14.1	14.1	14.2	14.2	14.3	14.3	14.3	14.4	14.4	14.5	14.5	14.5	14.6	14.6	14.6	14.7	14.7	14.7	14.8	14.8	14.8	14.9	14.9	14.9	15.0	15.0	15.0
Sunrise (AM)	6:02	6:00	5:59	5:57	5:56	5:54	5:53	5:52	5:50	5:49	5:48	5:47	5:46	5:44	5:43	5:42	5:41	5:40	5:39	5:38	5:37	5:36	5:35	5:34	5:34	5:33	5:32	5:31	5:31	5:30	5:29
Sunset (PM)	7:57	7:58	7:59	8:00	8:02	8:03	8:04	8:05	8:06	8:08	8:09	8:10	8:11	8:12	8:13	8:14	8:15	8:17	8:18	8:19	8:20	8:21	8:22	8:23	8:24	8:25	8:26	8:27	8:28	8:29	8:29

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.9	6:02	7:57
2	14.0	6:00	7:58
3	14.0	5:59	7:59
4	14.1	5:57	8:00
5	14.1	5:56	8:02
6	14.1	5:54	8:03
7	14.2	5:53	8:04
8	14.2	5:52	8:05
9	14.3	5:50	8:06
10	14.3	5:49	8:08
11	14.3	5:48	8:09
12	14.4	5:47	8:10
13	14.4	5:46	8:11
14	14.5	5:44	8:12
15	14.5	5:43	8:13
16	14.5	5:42	8:14
17	14.6	5:41	8:15
18	14.6	5:40	8:17
19	14.6	5:39	8:18
20	14.7	5:38	8:19
21	14.7	5:37	8:20
22	14.7	5:36	8:21
23	14.8	5:35	8:22
24	14.8	5:34	8:23
25	14.8	5:34	8:24
26	14.9	5:33	8:25
27	14.9	5:32	8:26
28	14.9	5:31	8:27
29	15.0	5:31	8:28
30	15.0	5:30	8:29
31	15.0	5:29	8:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.58 kWh/m².

For context, solar energy here swings from a low near 1.32 kWh/m² to a high of 6.06 kWh/m² in June across the year — May's 5.58 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)	5.1	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.5	5.5	5.5	5.6	5.6	5.6	5.7	5.7	5.7	5.7	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.1	Bright
2	5.2	Bright
3	5.2	Bright
4	5.2	Bright
5	5.2	Bright
6	5.3	Bright
7	5.3	Bright
8	5.3	Bright
9	5.3	Bright
10	5.4	Bright
11	5.4	Bright
12	5.4	Bright
13	5.5	Bright
14	5.5	Bright
15	5.5	Bright
16	5.6	Bright
17	5.6	Bright
18	5.6	Bright
19	5.7	Bright
20	5.7	Bright
21	5.7	Bright
22	5.7	Bright
23	5.8	Bright
24	5.8	Bright
25	5.8	Bright
26	5.8	Bright
27	5.8	Bright
28	5.8	Bright
29	5.8	Bright
30	5.8	Bright
31	5.8	Bright

Planning a trip in May

Is May a good time to visit Mont-de-Marsan?

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

6.3

Sightseeing

3rd-best month of the year

4.6

Beach & pool

5th-best month of the year

May is a reasonable time to visit Mont-de-Marsan for sightseeing.

What to pack for Mont-de-Marsan in May

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

In May, Mont-de-Marsan sees daytime highs around 22°C and nights near 12°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Mont-de-Marsan in May

The nearest coast averages about 16°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 70 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 Jul 3 to Sep 23 — about 2.7 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	12	14	16	19	21	22	21	18	16	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	12	Bracing
Apr	14	Bracing
May	16	Cool
Jun	19	Cool
Jul	21	Refreshing
Aug	22	Refreshing
Sep	21	Refreshing
Oct	18	Cool
Nov	16	Cool
Dec	14	Bracing

UV index in Mont-de-Marsan in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Mont-de-Marsan peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. 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 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	8	8	5	3	2	1
Level	Low	Low	Moderate	High	High	Very high	Very high	Very high	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	4	Moderate
Apr	6	High
May	6	High
Jun	7	Very high
Jul	8	Very high
Aug	8	Very high
Sep	5	Moderate
Oct	3	Moderate
Nov	2	Low
Dec	1	Low

Location & terrain

Where is Mont-de-Marsan?

Mont-de-Marsan sits at 43.9°N, 0.5°W, 51 m above sea level, in France. The nearest listed city is Dax, 49 km away.

Topography around Mont-de-Marsan

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mont-de-Marsan.

Within 3 km, the terrain around Mont-de-Marsan has only modest variations in elevation — a maximum elevation change of 73 m around an average of 61 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 128 m; within 80 km, large variations in elevation — a maximum elevation change of 637 m.

The land around Mont-de-Marsan is covered by trees (42%) and artificial surfaces (41%) within 3 km, trees (58%) and cropland (20%) within 16 km, and trees (49%), cropland (25%) and grassland (21%) within 80 km.

3 km

73 m

trees 42%

16 km

128 m

trees 58%

80 km

637 m

trees 49%

treesgrasslandcroplandartificial surfaceswater

← April Mont-de-Marsan year-round climate June →Best places to visit in May

May weather nearby: Dax 49 km · Pau 65 km · Tarbes 86 km · Marmande 86 km · Bayonne 90 km · Auch 91 km · Anglet 93 km · Gujan-Mestras 95 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 Mont-de-Marsan (43.8902°, -0.4971°, elevation 51 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	20	10
2	21	10
3	21	10
4	21	10
5	21	10
6	21	10
7	21	11
8	21	11
9	21	11
10	22	11
11	22	11
12	22	11
13	22	11
14	22	11
15	22	11
16	22	12
17	23	12
18	23	12
19	23	12
20	23	12
21	23	12
22	23	12
23	24	12
24	24	12
25	24	13
26	24	13
27	24	13
28	24	13
29	24	13
30	24	13
31	24	13

	Clearer (%)	Cloudier (%)
1	33	67
2	33	67
3	33	67
4	33	67
5	33	67
6	33	67
7	33	67
8	33	67
9	34	66
10	34	66
11	34	66
12	35	65
13	35	65
14	35	65
15	36	64
16	36	64
17	37	63
18	37	63
19	38	62
20	39	61
21	39	61
22	40	60
23	41	59
24	42	58
25	42	58
26	42	58
27	42	58
28	42	58
29	41	59
30	41	59
31	41	59

	Rain chance (%)
1	45
2	45
3	45
4	45
5	44
6	44
7	43
8	42
9	42
10	41
11	41
12	40
13	40
14	39
15	38
16	38
17	37
18	37
19	36
20	36
21	36
22	36
23	36
24	36
25	36
26	36
27	36
28	36
29	36
30	37
31	37

	Dry (%)	Comfortable (%)	Humid (%)
1	89	11	0
2	88	11	1
3	87	12	1
4	86	13	1
5	85	14	1
6	84	15	1
7	83	16	1
8	83	16	1
9	82	17	1
10	82	17	1
11	80	18	2
12	80	18	2
13	79	19	2
14	79	19	2
15	79	19	2
16	77	20	3
17	77	20	3
18	76	20	4
19	75	21	4
20	75	21	4
21	73	22	5
22	72	23	5
23	70	24	6
24	68	25	7
25	67	26	7
26	64	28	8
27	63	29	8
28	61	30	9
29	59	31	10
30	58	32	10
31	57	32	11

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

	Clearer (%)	Cloudier (%)
1	33	67
2	33	67
3	33	67
4	33	67
5	33	67
6	33	67
7	33	67
8	33	67
9	34	66
10	34	66
11	34	66
12	35	65
13	35	65
14	35	65
15	36	64
16	36	64
17	37	63
18	37	63
19	38	62
20	39	61
21	39	61
22	40	60
23	41	59
24	42	58
25	42	58
26	42	58
27	42	58
28	42	58
29	41	59
30	41	59
31	41	59

	Rain chance (%)
1	45
2	45
3	45
4	45
5	44
6	44
7	43
8	42
9	42
10	41
11	41
12	40
13	40
14	39
15	38
16	38
17	37
18	37
19	36
20	36
21	36
22	36
23	36
24	36
25	36
26	36
27	36
28	36
29	36
30	37
31	37

	Dry (%)	Comfortable (%)	Humid (%)
1	89	11	0
2	88	11	1
3	87	12	1
4	86	13	1
5	85	14	1
6	84	15	1
7	83	16	1
8	83	16	1
9	82	17	1
10	82	17	1
11	80	18	2
12	80	18	2
13	79	19	2
14	79	19	2
15	79	19	2
16	77	20	3
17	77	20	3
18	76	20	4
19	75	21	4
20	75	21	4
21	73	22	5
22	72	23	5
23	70	24	6
24	68	25	7
25	67	26	7
26	64	28	8
27	63	29	8
28	61	30	9
29	59	31	10
30	58	32	10
31	57	32	11

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

	Clearer (%)	Cloudier (%)
1	33	67
2	33	67
3	33	67
4	33	67
5	33	67
6	33	67
7	33	67
8	33	67
9	34	66
10	34	66
11	34	66
12	35	65
13	35	65
14	35	65
15	36	64
16	36	64
17	37	63
18	37	63
19	38	62
20	39	61
21	39	61
22	40	60
23	41	59
24	42	58
25	42	58
26	42	58
27	42	58
28	42	58
29	41	59
30	41	59
31	41	59

	Rain chance (%)
1	45
2	45
3	45
4	45
5	44
6	44
7	43
8	42
9	42
10	41
11	41
12	40
13	40
14	39
15	38
16	38
17	37
18	37
19	36
20	36
21	36
22	36
23	36
24	36
25	36
26	36
27	36
28	36
29	36
30	37
31	37

	Dry (%)	Comfortable (%)	Humid (%)
1	89	11	0
2	88	11	1
3	87	12	1
4	86	13	1
5	85	14	1
6	84	15	1
7	83	16	1
8	83	16	1
9	82	17	1
10	82	17	1
11	80	18	2
12	80	18	2
13	79	19	2
14	79	19	2
15	79	19	2
16	77	20	3
17	77	20	3
18	76	20	4
19	75	21	4
20	75	21	4
21	73	22	5
22	72	23	5
23	70	24	6
24	68	25	7
25	67	26	7
26	64	28	8
27	63	29	8
28	61	30	9
29	59	31	10
30	58	32	10
31	57	32	11