Penarth weather in March

In March, Penarth sees average daytime highs of 9°C and overnight lows near 4°C, with 68 mm of precipitation across 11.7 wet days and about 11.5 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 8°C in the first days to 10°C by the end. The sky is clear or mostly clear about 15% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 30 min at the start of March to 12 h 30 min by month's end. Set against the rest of the year, March is Penarth's 7th-clearest and 5th-windiest month. For the whole year in context, see Penarth's year-round climate.

Daytime high: 9°; 9th warmest
Overnight low: 4°; 4th coldest
Precipitation: 68 mm; 11.7 wet days
Daylight: 11 h 30 min; 6:37 AM – 6:08 PM
Cloud cover: 72%; 7th clearest
Wind: 18 km/h; 5th windiest
Solar energy: 2.64 kWh/m²
Travel score: 1.9; out of 10

Penarth is town and community in the Vale of Glamorgan, south Wales.

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

← February Penarth year-round climate April →Best places to visit in March

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 8°C in the first days to 10°C by the end.

A typical March day in Penarth reaches about 9°C in the afternoon and slips back to 4°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 12°C. Set against its neighbours, March runs about 2°C warmer than February and about 3°C cooler than April.

	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)	8	8	8	8	9	9	9	9	9	9	9	9	9	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11
Avg low (°C)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5

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

How March really feels in Penarth

Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 7 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 March is cold — wind chill drags the overnight "feels like" below the raw low.

Penarth weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	7° / 4°	95	14.5	0.9	8.1	1.0
Feb	8° / 3°	74	11.2	0.9	9.6	1.1
Mar	9° / 4°	68	11.7	0.5	11.5	1.9
Apr	12° / 6°	70	11.6	0.1	13.5	3.0
May	15° / 9°	73	12.3	0	15.3	4.2
Jun	17° / 12°	71	11	0	16.3	5.3
Jul	19° / 13°	74	11.7	0	15.9	5.8
Aug	19° / 13°	87	12.3	0	14.4	5.7
Sep	17° / 11°	74	11	0	12.4	5.2
Oct	14° / 9°	106	14	0	10.4	3.5
Nov	10° / 6°	102	14.5	0.1	8.6	2.1
Dec	8° / 4°	107	13.7	0.6	7.7	1.2

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 15% of March, with mostly cloudy or overcast conditions the remaining 70%. 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 (%)	29	29	29	29	29	29	29	29	28	28	28	28	28	29	29	29	30	30	30	31	31	31	33	33	33	33	34	34	34	34	35
Cloudier (%)	71	71	71	71	71	71	71	71	72	72	72	72	72	71	71	71	70	70	70	69	69	69	67	67	67	67	66	66	66	66	65

	Clearer (%)	Cloudier (%)
1	29	71
2	29	71
3	29	71
4	29	71
5	29	71
6	29	71
7	29	71
8	29	71
9	28	72
10	28	72
11	28	72
12	28	72
13	28	72
14	29	71
15	29	71
16	29	71
17	30	70
18	30	70
19	30	70
20	31	69
21	31	69
22	31	69
23	33	67
24	33	67
25	33	67
26	33	67
27	34	66
28	34	66
29	34	66
30	34	66
31	35	65

Chance of precipitation in March

Any precipitationSnow

Penarth gets around 68 mm of rain and snow over 11.7 wet days in March, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 38% and peaks near 42% on the wettest days, and about 1 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 (%)	42	42	42	42	41	41	40	40	39	38	38	37	36	36	35	35	35	34	34	34	34	35	35	36	36	37	38	38	38	39	39
Snow chance (%)	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1

	Rain chance (%)	Snow chance (%)
1	42	2
2	42	2
3	42	2
4	42	2
5	41	2
6	41	2
7	40	2
8	40	2
9	39	2
10	38	2
11	38	2
12	37	2
13	36	2
14	36	2
15	35	2
16	35	2
17	35	2
18	34	2
19	34	2
20	34	2
21	34	1
22	35	1
23	35	1
24	36	1
25	36	1
26	37	1
27	38	1
28	38	1
29	38	1
30	39	1
31	39	1

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March 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 March

Winds average 18 km/h in March.

Across March, daily wind ranges from about 17 km/h on the calmest days to 19 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)	19	19	19	19	19	19	19	19	18	18	18	18	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	17	17	17
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	19	light breeze
2	19	light breeze
3	19	light breeze
4	19	light breeze
5	19	light breeze
6	19	light breeze
7	19	light breeze
8	19	light breeze
9	18	light breeze
10	18	light breeze
11	18	light breeze
12	18	light breeze
13	18	light breeze
14	18	light breeze
15	18	light breeze
16	18	light breeze
17	18	light breeze
18	18	light breeze
19	18	light breeze
20	17	light breeze
21	17	light breeze
22	17	light breeze
23	17	light breeze
24	17	light breeze
25	17	light breeze
26	17	light breeze
27	17	light breeze
28	17	light breeze
29	17	light breeze
30	17	light breeze
31	17	light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 30 min at the start of March to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 120 minutes over March. Sunrise moves from 7:11 AM to 6:02 AM, and sunset from 5:41 PM to 6:33 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)	10.5	10.6	10.6	10.7	10.8	10.8	10.9	11.0	11.0	11.1	11.2	11.2	11.3	11.4	11.4	11.5	11.6	11.6	11.7	11.8	11.8	11.9	12.0	12.1	12.1	12.2	12.3	12.3	12.4	12.5	12.5
Sunrise (AM)	7:11	7:08	7:06	7:04	7:02	7:00	6:57	6:55	6:53	6:51	6:48	6:46	6:44	6:42	6:39	6:37	6:35	6:32	6:30	6:28	6:25	6:23	6:21	6:18	6:16	6:14	6:11	6:09	6:07	6:04	6:02
Sunset (PM)	5:41	5:43	5:45	5:47	5:48	5:50	5:52	5:54	5:56	5:57	5:59	6:01	6:02	6:04	6:06	6:08	6:09	6:11	6:13	6:15	6:16	6:18	6:20	6:21	6:23	6:25	6:27	6:28	6:30	6:32	6:33

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.5	7:11	5:41
2	10.6	7:08	5:43
3	10.6	7:06	5:45
4	10.7	7:04	5:47
5	10.8	7:02	5:48
6	10.8	7:00	5:50
7	10.9	6:57	5:52
8	11.0	6:55	5:54
9	11.0	6:53	5:56
10	11.1	6:51	5:57
11	11.2	6:48	5:59
12	11.2	6:46	6:01
13	11.3	6:44	6:02
14	11.4	6:42	6:04
15	11.4	6:39	6:06
16	11.5	6:37	6:08
17	11.6	6:35	6:09
18	11.6	6:32	6:11
19	11.7	6:30	6:13
20	11.8	6:28	6:15
21	11.8	6:25	6:16
22	11.9	6:23	6:18
23	12.0	6:21	6:20
24	12.1	6:18	6:21
25	12.1	6:16	6:23
26	12.2	6:14	6:25
27	12.3	6:11	6:27
28	12.3	6:09	6:28
29	12.4	6:07	6:30
30	12.5	6:04	6:32
31	12.5	6:02	6:33

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 2.64 kWh/m².

For context, solar energy here swings from a low near 0.65 kWh/m² to a high of 5.28 kWh/m² in June across the year — March's 2.64 kWh/m² falls in the middle.

	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)	2.0	2.0	2.1	2.1	2.2	2.2	2.2	2.3	2.3	2.4	2.4	2.4	2.5	2.5	2.6	2.6	2.7	2.7	2.8	2.8	2.9	2.9	3.0	3.0	3.1	3.1	3.2	3.2	3.3	3.3	3.4
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	2.0	Moderate
2	2.0	Moderate
3	2.1	Moderate
4	2.1	Moderate
5	2.2	Moderate
6	2.2	Moderate
7	2.2	Moderate
8	2.3	Moderate
9	2.3	Moderate
10	2.4	Moderate
11	2.4	Moderate
12	2.4	Moderate
13	2.5	Moderate
14	2.5	Moderate
15	2.6	Moderate
16	2.6	Moderate
17	2.7	Moderate
18	2.7	Moderate
19	2.8	Moderate
20	2.8	Moderate
21	2.9	Moderate
22	2.9	Moderate
23	3.0	Moderate
24	3.0	Moderate
25	3.1	Moderate
26	3.1	Moderate
27	3.2	Moderate
28	3.2	Moderate
29	3.3	Moderate
30	3.3	Moderate
31	3.4	Moderate

Planning a trip in March

Is March a good time to visit Penarth?

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

1.9

Sightseeing

9th-best month of the year

0.0

Beach & pool

7th-best month of the year

March is a weaker month for outdoor sightseeing in Penarth.

What to pack for Penarth in March

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

In March, Penarth sees daytime highs around 9°C and nights near 4°C. Pack a warm layer. Worth having: rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Penarth in March

The nearest coast averages about 8°C in March — 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 7°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)	8	7	8	9	12	15	17	18	17	15	12	9
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Cool	Cool	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	8	Bracing
Feb	7	Bracing
Mar	8	Bracing
Apr	9	Bracing
May	12	Bracing
Jun	15	Cool
Jul	17	Cool
Aug	18	Cool
Sep	17	Cool
Oct	15	Bracing
Nov	12	Bracing
Dec	9	Bracing

UV index in Penarth in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Penarth peaks around August 13 at about 6 (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	1	3	4	6	6	6	7	4	2	1	1
Level	Low	Low	Moderate	Moderate	High	High	High	High	Moderate	Moderate	Low	Low

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

Location & terrain

Where is Penarth?

Penarth sits at 51.4°N, 3.2°W, 51 m above sea level, in United Kingdom. The nearest listed city is Cardiff, 5.0 km away.

Topography around Penarth

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

Within 3 km, the terrain around Penarth has only modest variations in elevation — a maximum elevation change of 95 m around an average of 16 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 303 m; within 80 km, large variations in elevation — a maximum elevation change of 864 m.

The land around Penarth is covered by water (43%) and artificial surfaces (24%) within 3 km, water (53%) within 16 km, and grassland (52%) within 80 km.

3 km

95 m

water 43%

16 km

303 m

water 53%

80 km

864 m

grassland 52%

treesgrasslandcroplandartificial surfaceswater

← February Penarth year-round climate April →Best places to visit in March

March weather nearby: Cardiff 5.0 km · Barry 9.0 km · Caerphilly 15 km · Weston-super-Mare 17 km · Risca 19 km · Newport 21 km · Pontypridd 22 km · Clevedon 22 km

United Kingdom travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type D / G / M; 230 V · 50 Hz
Prices: ≈ 89% of US; price level, 2025
GDP per capita: $57,602; 2025
Happiness: 6.7 / 10; World Happiness, 2025
Safe drinking water: 100%; of population, 2024
Homicide rate: 1.1; per 100k, 2021
Road deaths: 3.2; per 100k/yr, 2019
Income group: High; World Bank
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 Penarth (51.4386°, -3.1734°, 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	8	4
2	8	4
3	8	4
4	8	4
5	9	4
6	9	4
7	9	4
8	9	4
9	9	4
10	9	4
11	9	4
12	9	4
13	9	4
14	9	4
15	9	4
16	10	4
17	10	5
18	10	5
19	10	5
20	10	5
21	10	5
22	10	5
23	10	5
24	10	5
25	10	5
26	10	5
27	10	5
28	10	5
29	10	5
30	11	5
31	11	5

	Clearer (%)	Cloudier (%)
1	29	71
2	29	71
3	29	71
4	29	71
5	29	71
6	29	71
7	29	71
8	29	71
9	28	72
10	28	72
11	28	72
12	28	72
13	28	72
14	29	71
15	29	71
16	29	71
17	30	70
18	30	70
19	30	70
20	31	69
21	31	69
22	31	69
23	33	67
24	33	67
25	33	67
26	33	67
27	34	66
28	34	66
29	34	66
30	34	66
31	35	65

	Rain chance (%)	Snow chance (%)
1	42	2
2	42	2
3	42	2
4	42	2
5	41	2
6	41	2
7	40	2
8	40	2
9	39	2
10	38	2
11	38	2
12	37	2
13	36	2
14	36	2
15	35	2
16	35	2
17	35	2
18	34	2
19	34	2
20	34	2
21	34	1
22	35	1
23	35	1
24	36	1
25	36	1
26	37	1
27	38	1
28	38	1
29	38	1
30	39	1
31	39	1

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

	Clearer (%)	Cloudier (%)
1	29	71
2	29	71
3	29	71
4	29	71
5	29	71
6	29	71
7	29	71
8	29	71
9	28	72
10	28	72
11	28	72
12	28	72
13	28	72
14	29	71
15	29	71
16	29	71
17	30	70
18	30	70
19	30	70
20	31	69
21	31	69
22	31	69
23	33	67
24	33	67
25	33	67
26	33	67
27	34	66
28	34	66
29	34	66
30	34	66
31	35	65

	Rain chance (%)	Snow chance (%)
1	42	2
2	42	2
3	42	2
4	42	2
5	41	2
6	41	2
7	40	2
8	40	2
9	39	2
10	38	2
11	38	2
12	37	2
13	36	2
14	36	2
15	35	2
16	35	2
17	35	2
18	34	2
19	34	2
20	34	2
21	34	1
22	35	1
23	35	1
24	36	1
25	36	1
26	37	1
27	38	1
28	38	1
29	38	1
30	39	1
31	39	1

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

	Clearer (%)	Cloudier (%)
1	29	71
2	29	71
3	29	71
4	29	71
5	29	71
6	29	71
7	29	71
8	29	71
9	28	72
10	28	72
11	28	72
12	28	72
13	28	72
14	29	71
15	29	71
16	29	71
17	30	70
18	30	70
19	30	70
20	31	69
21	31	69
22	31	69
23	33	67
24	33	67
25	33	67
26	33	67
27	34	66
28	34	66
29	34	66
30	34	66
31	35	65

	Rain chance (%)	Snow chance (%)
1	42	2
2	42	2
3	42	2
4	42	2
5	41	2
6	41	2
7	40	2
8	40	2
9	39	2
10	38	2
11	38	2
12	37	2
13	36	2
14	36	2
15	35	2
16	35	2
17	35	2
18	34	2
19	34	2
20	34	2
21	34	1
22	35	1
23	35	1
24	36	1
25	36	1
26	37	1
27	38	1
28	38	1
29	38	1
30	39	1
31	39	1

	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