Matoury weather in May

In May, Matoury sees average daytime highs of 29°C and overnight lows near 24°C, with 408 mm of rain across 29.2 wet days and about 12.2 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 6% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of May to 12 h 18 min by month's end. Set against the rest of the year, May is Matoury's 12th-clearest and 9th-windiest month. For the whole year in context, see Matoury's year-round climate.

Daytime high: 29°; 9th warmest
Overnight low: 24°; 11th coldest
Rainfall: 408 mm; 29.2 wet days
Daylight: 12 h 12 min; 6:19 AM – 6:32 PM
Cloud cover: 81%; 12th clearest
Wind: 10 km/h; 9th windiest
Solar energy: 4.16 kWh/m²
Travel score: 3.1; out of 10

← April Matoury 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

Day-to-day highs hold fairly steady near 29°C through the month.

A typical May day in Matoury reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, May runs on par with April and on par with 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)	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29
Avg low (°C)	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24

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

How May really feels in Matoury

Once humidity and wind are folded in, May averages 31 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Matoury weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	28° / 24°	259	26.5	11.8	3.7
Feb	28° / 24°	217	22.2	11.8	4.0
Mar	29° / 24°	175	22.9	12	3.9
Apr	29° / 24°	264	24.8	12.1	3.5
May	29° / 24°	408	29.2	12.2	3.1
Jun	29° / 23°	354	28.4	12.3	3.1
Jul	30° / 23°	240	26.6	12.3	3.4
Aug	30° / 23°	126	19.9	12.2	3.9
Sep	31° / 23°	62	13	12	4.3
Oct	31° / 24°	72	14.5	11.9	4.2
Nov	30° / 24°	154	21.1	11.8	3.6
Dec	29° / 24°	274	27.4	11.7	3.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 82%.

	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 (%)	23	22	22	22	21	21	21	20	19	19	18	18	18	17	17	18	17	17	16	16	16	16	14	14	14	15	15	15	16	17	17
Cloudier (%)	77	78	78	78	79	79	79	80	81	81	82	82	82	83	83	82	83	83	84	84	84	84	86	86	86	85	85	85	84	83	83

	Clearer (%)	Cloudier (%)
1	23	77
2	22	78
3	22	78
4	22	78
5	21	79
6	21	79
7	21	79
8	20	80
9	19	81
10	19	81
11	18	82
12	18	82
13	18	82
14	17	83
15	17	83
16	18	82
17	17	83
18	17	83
19	16	84
20	16	84
21	16	84
22	16	84
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	15	85
29	16	84
30	17	83
31	17	83

Chance of precipitation in May

Any precipitation

Matoury gets around 408 mm of rain over 29.2 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 94% and peaks near 96% on the wettest days. The odds climb 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 (%)	89	90	90	90	91	91	92	92	93	93	93	94	94	94	94	95	95	95	95	95	95	96	96	96	96	96	96	96	96	96	96

	Rain chance (%)
1	89
2	90
3	90
4	90
5	91
6	91
7	92
8	92
9	93
10	93
11	93
12	94
13	94
14	94
15	94
16	95
17	95
18	95
19	95
20	95
21	95
22	96
23	96
24	96
25	96
26	96
27	96
28	96
29	96
30	96
31	96

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	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
Oppressive (%)	71	70	69	68	67	66	65	63	62	62	61	61	60	60	61	61	61	62	62	63	64	65	66	67	68	69	69	70	71	71	72
Miserable (%)	29	30	31	32	33	34	35	37	38	38	39	39	40	40	39	39	39	38	38	37	36	35	34	33	32	31	31	30	29	29	28

	Oppressive (%)	Miserable (%)
1	71	29
2	70	30
3	69	31
4	68	32
5	67	33
6	66	34
7	65	35
8	63	37
9	62	38
10	62	38
11	61	39
12	61	39
13	60	40
14	60	40
15	61	39
16	61	39
17	61	39
18	62	38
19	62	38
20	63	37
21	64	36
22	65	35
23	66	34
24	67	33
25	68	32
26	69	31
27	69	31
28	70	30
29	71	29
30	71	29
31	72	28

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 11 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)	11	11	11	11	11	11	11	11	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9	9
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	11	calm
2	11	calm
3	11	calm
4	11	calm
5	11	calm
6	11	calm
7	11	calm
8	11	calm
9	10	calm
10	10	calm
11	10	calm
12	10	calm
13	10	calm
14	10	calm
15	10	calm
16	10	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	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	9	calm
31	9	calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 12 min at the start of May to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over May. Sunrise moves from 6:21 AM to 6:19 AM, and sunset from 6:32 PM to 6:34 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)	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.3	12.3	12.3	12.3
Sunrise (AM)	6:21	6:21	6:21	6:21	6:21	6:20	6:20	6:20	6:20	6:20	6:20	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19	6:19
Sunset (PM)	6:32	6:32	6:31	6:31	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:32	6:33	6:33	6:33	6:33	6:33	6:33	6:34	6:34	6:34	6:34	6:34	6:34

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	6:21	6:32
2	12.2	6:21	6:32
3	12.2	6:21	6:31
4	12.2	6:21	6:31
5	12.2	6:21	6:32
6	12.2	6:20	6:32
7	12.2	6:20	6:32
8	12.2	6:20	6:32
9	12.2	6:20	6:32
10	12.2	6:20	6:32
11	12.2	6:20	6:32
12	12.2	6:19	6:32
13	12.2	6:19	6:32
14	12.2	6:19	6:32
15	12.2	6:19	6:32
16	12.2	6:19	6:32
17	12.2	6:19	6:32
18	12.2	6:19	6:32
19	12.2	6:19	6:32
20	12.2	6:19	6:33
21	12.2	6:19	6:33
22	12.2	6:19	6:33
23	12.2	6:19	6:33
24	12.2	6:19	6:33
25	12.2	6:19	6:33
26	12.2	6:19	6:34
27	12.2	6:19	6:34
28	12.3	6:19	6:34
29	12.3	6:19	6:34
30	12.3	6:19	6:34
31	12.3	6:19	6:34

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.16 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.16 kWh/m² to a high of 6.07 kWh/m² in September across the year — May's 4.16 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)	4.4	4.4	4.4	4.4	4.3	4.3	4.3	4.3	4.3	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1
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	4.4	Bright
2	4.4	Bright
3	4.4	Bright
4	4.4	Bright
5	4.3	Bright
6	4.3	Bright
7	4.3	Bright
8	4.3	Bright
9	4.3	Bright
10	4.2	Bright
11	4.2	Bright
12	4.2	Bright
13	4.2	Bright
14	4.2	Bright
15	4.2	Bright
16	4.2	Bright
17	4.1	Bright
18	4.1	Bright
19	4.1	Bright
20	4.1	Bright
21	4.1	Bright
22	4.1	Bright
23	4.1	Bright
24	4.1	Bright
25	4.1	Bright
26	4.1	Bright
27	4.1	Bright
28	4.1	Bright
29	4.1	Bright
30	4.1	Bright
31	4.1	Bright

Planning a trip in May

Is May a good time to visit Matoury?

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

3.1

Sightseeing

11th-best month of the year

3.9

Beach & pool

12th-best month of the year

May is a weaker month for outdoor sightseeing in Matoury.

What to pack for Matoury in May

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

In May, Matoury sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near Matoury in May

The nearest coast averages about 28°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 22 km away) is warmest in July at about 28°C and coldest in January near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	27	27	27	28	28	28	28	28	28	28	28	27
Comfort	Warm	Warm	Warm	Warm	Warm	Tropical	Tropical	Tropical	Tropical	Tropical	Warm	Warm

	Sea temperature (°C)	Comfort
Jan	27	Warm
Feb	27	Warm
Mar	27	Warm
Apr	28	Warm
May	28	Warm
Jun	28	Tropical
Jul	28	Tropical
Aug	28	Tropical
Sep	28	Tropical
Oct	28	Tropical
Nov	28	Warm
Dec	27	Warm

UV index in Matoury in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Matoury peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 10 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	13	14	14	13	11	11	11	12	12	11	10
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	13	Extreme
Mar	14	Extreme
Apr	14	Extreme
May	13	Extreme
Jun	11	Extreme
Jul	11	Extreme
Aug	11	Extreme
Sep	12	Extreme
Oct	12	Extreme
Nov	11	Extreme
Dec	10	Extreme

Air quality in Matoury in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Matoury is worst in February — around 26 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (August, 7 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	23	26	25	24	17	10	7	7	8	10	11	18
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Good	Good	Good	Moderate

	PM2.5 (µg/m³)	Level
Jan	23	Moderate
Feb	26	Moderate
Mar	25	Moderate
Apr	24	Moderate
May	17	Moderate
Jun	10	Good
Jul	7	Good
Aug	7	Good
Sep	8	Good
Oct	10	Good
Nov	11	Good
Dec	18	Moderate

Location & terrain

Where is Matoury?

Matoury sits at 4.8°N, 52.3°W, 13 m above sea level, in French Guiana. The nearest listed city is Rémire-Montjoly, 10 km away.

Topography around Matoury

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

Within 3 km, the terrain around Matoury has only modest variations in elevation — a maximum elevation change of 171 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 244 m; within 80 km, significant variations in elevation — a maximum elevation change of 487 m.

The land around Matoury is covered by trees (79%) within 3 km, trees (54%) and water (26%) within 16 km, and trees (56%) and water (38%) within 80 km.

3 km

171 m

trees 79%

16 km

244 m

trees 54%

80 km

487 m

trees 56%

treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves

← April Matoury year-round climate June →Best places to visit in May

May weather nearby: Rémire-Montjoly 10 km · Cayenne 10 km · Kourou 50 km · Oiapoque 124 km · Saint-Laurent-du-Maroni 202 km · Blauwgrond 329 km · Rainville 330 km · Beekhuizen 333 km

French Guiana travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / E; 220 V · 50 Hz

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 Matoury (4.8492°, -52.3235°, elevation 13 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	29	24
2	29	24
3	29	24
4	29	24
5	29	24
6	29	24
7	29	24
8	29	24
9	29	24
10	29	24
11	29	24
12	29	24
13	29	24
14	29	24
15	29	24
16	29	24
17	29	24
18	29	24
19	29	24
20	29	24
21	29	24
22	29	24
23	29	24
24	29	24
25	29	24
26	29	24
27	29	24
28	29	24
29	29	24
30	29	24
31	29	24

	Clearer (%)	Cloudier (%)
1	23	77
2	22	78
3	22	78
4	22	78
5	21	79
6	21	79
7	21	79
8	20	80
9	19	81
10	19	81
11	18	82
12	18	82
13	18	82
14	17	83
15	17	83
16	18	82
17	17	83
18	17	83
19	16	84
20	16	84
21	16	84
22	16	84
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	15	85
29	16	84
30	17	83
31	17	83

	Rain chance (%)
1	89
2	90
3	90
4	90
5	91
6	91
7	92
8	92
9	93
10	93
11	93
12	94
13	94
14	94
15	94
16	95
17	95
18	95
19	95
20	95
21	95
22	96
23	96
24	96
25	96
26	96
27	96
28	96
29	96
30	96
31	96

	Oppressive (%)	Miserable (%)
1	71	29
2	70	30
3	69	31
4	68	32
5	67	33
6	66	34
7	65	35
8	63	37
9	62	38
10	62	38
11	61	39
12	61	39
13	60	40
14	60	40
15	61	39
16	61	39
17	61	39
18	62	38
19	62	38
20	63	37
21	64	36
22	65	35
23	66	34
24	67	33
25	68	32
26	69	31
27	69	31
28	70	30
29	71	29
30	71	29
31	72	28

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

	Clearer (%)	Cloudier (%)
1	23	77
2	22	78
3	22	78
4	22	78
5	21	79
6	21	79
7	21	79
8	20	80
9	19	81
10	19	81
11	18	82
12	18	82
13	18	82
14	17	83
15	17	83
16	18	82
17	17	83
18	17	83
19	16	84
20	16	84
21	16	84
22	16	84
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	15	85
29	16	84
30	17	83
31	17	83

	Rain chance (%)
1	89
2	90
3	90
4	90
5	91
6	91
7	92
8	92
9	93
10	93
11	93
12	94
13	94
14	94
15	94
16	95
17	95
18	95
19	95
20	95
21	95
22	96
23	96
24	96
25	96
26	96
27	96
28	96
29	96
30	96
31	96

	Oppressive (%)	Miserable (%)
1	71	29
2	70	30
3	69	31
4	68	32
5	67	33
6	66	34
7	65	35
8	63	37
9	62	38
10	62	38
11	61	39
12	61	39
13	60	40
14	60	40
15	61	39
16	61	39
17	61	39
18	62	38
19	62	38
20	63	37
21	64	36
22	65	35
23	66	34
24	67	33
25	68	32
26	69	31
27	69	31
28	70	30
29	71	29
30	71	29
31	72	28

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

	Clearer (%)	Cloudier (%)
1	23	77
2	22	78
3	22	78
4	22	78
5	21	79
6	21	79
7	21	79
8	20	80
9	19	81
10	19	81
11	18	82
12	18	82
13	18	82
14	17	83
15	17	83
16	18	82
17	17	83
18	17	83
19	16	84
20	16	84
21	16	84
22	16	84
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	15	85
29	16	84
30	17	83
31	17	83

	Rain chance (%)
1	89
2	90
3	90
4	90
5	91
6	91
7	92
8	92
9	93
10	93
11	93
12	94
13	94
14	94
15	94
16	95
17	95
18	95
19	95
20	95
21	95
22	96
23	96
24	96
25	96
26	96
27	96
28	96
29	96
30	96
31	96

	Oppressive (%)	Miserable (%)
1	71	29
2	70	30
3	69	31
4	68	32
5	67	33
6	66	34
7	65	35
8	63	37
9	62	38
10	62	38
11	61	39
12	61	39
13	60	40
14	60	40
15	61	39
16	61	39
17	61	39
18	62	38
19	62	38
20	63	37
21	64	36
22	65	35
23	66	34
24	67	33
25	68	32
26	69	31
27	69	31
28	70	30
29	71	29
30	71	29
31	72	28