Tomar weather in May

In May, Tomar sees average daytime highs of 23°C and overnight lows near 12°C, with 60 mm of rain across 8 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 25°C by the end. The sky is clear or mostly clear about 39% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 36 min by month's end. Set against the rest of the year, May is Tomar's 5th-clearest and 4th-windiest month. For the whole year in context, see Tomar's year-round climate.

Daytime high
23°
5th warmest
Overnight low
12°
7th coldest
Rainfall
60 mm
8 wet days
Daylight
14 h 12 min
5:25 AM – 7:35 PM
Cloud cover
50%
5th clearest
Wind
13 km/h
4th windiest
Solar energy
6.51 kWh/m²
Travel score
7.3
out of 10

Tomar is city seat of Tomar municipality.

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

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 25°C by the end.

A typical May day in Tomar reaches about 23°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 30°C. Set against its neighbours, May runs about 3°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12111
22111
32111
42111
52111
62211
72211
82211
92211
102211
112212
122212
132312
142312
152312
162312
172312
182312
192312
202412
212413
222413
232413
242413
252413
262413
272513
282513
292513
302513
312514

Tomar weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 759.39.54.1
Feb15° / 577.410.44.9
Mar18° / 648.311.76.2
Apr20° / 10°659.3136.4
May23° / 12°60814.17.3
Jun27° / 15°163.414.77.9
Jul30° / 16°51.414.56.9
Aug30° / 16°92.313.66.6
Sep27° / 15°394.912.37.5
Oct22° / 13°899.510.96.8
Nov17° / 859.79.85.5
Dec14° / 839.19.34.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25248
35248
45248
55149
65248
75149
85248
95248
105347
115347
125446
135545
145545
155644
165743
175743
185941
195941
206040
216040
226040
236139
246139
256139
266238
276238
286238
296238
306238
316337

Chance of precipitation in May

Any precipitation

Tomar gets around 60 mm of rain over 8 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 26% and peaks near 29% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
128
229
329
429
529
629
729
829
929
1028
1128
1228
1328
1428
1527
1627
1726
1826
1926
2025
2125
2224
2324
2423
2522
2622
2721
2821
2920
3019
3119

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 78% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
188120
287130
387130
487130
586140
686140
785150
885150
984160
1083170
1182171
1281181
1380191
1479201
1579201
1678211
1777221
1877221
1976231
2075232
2174242
2273252
2373252
2472262
2570273
2670273
2769283
2869283
2968293
3067303
3167303

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 13 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
613light breeze
713light breeze
813light breeze
913light 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
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 5:41 AM to 5:14 AM, and sunset from 7:20 PM to 7:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:417:20
213.75:407:21
313.75:397:22
413.85:387:23
513.85:367:24
613.85:357:25
713.95:347:26
813.95:337:27
913.95:327:28
1014.05:317:29
1114.05:307:30
1214.05:297:31
1314.15:287:32
1414.15:277:33
1514.15:267:34
1614.25:257:35
1714.25:247:36
1814.25:237:37
1914.35:227:38
2014.35:217:39
2114.35:207:40
2214.35:207:41
2314.45:197:41
2414.45:187:42
2514.45:187:43
2614.55:177:44
2714.55:167:45
2814.55:167:46
2914.55:157:46
3014.55:157:47
3114.65:147:48

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.51 kWh/m².

For context, solar energy here swings from a low near 1.9 kWh/m² to a high of 7.57 kWh/m² in July across the year — May's 6.51 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.1Intense
36.1Intense
46.1Intense
56.2Intense
66.2Intense
76.2Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.4Intense
136.4Intense
146.5Intense
156.5Intense
166.5Intense
176.6Intense
186.6Intense
196.6Intense
206.7Intense
216.7Intense
226.7Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.9Intense
306.9Intense
316.9Intense
Planning a trip in May

Is May a good time to visit Tomar?

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

7.3
Sightseeing
3rd-best month of the year
5.6
Beach & pool
5th-best month of the year

May is one of the better times to visit Tomar for general sightseeing.

What to pack for Tomar in May

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

In May, Tomar sees daytime highs around 23°C and nights near 12°C. Pack sun protection. Worth having: light clothes and rain gear. About 8 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Tomar 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 61 km away) is warmest in August at about 19°C and coldest in February near 14°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May16Cool
Jun18Cool
Jul18Cool
Aug19Cool
Sep19Cool
Oct18Cool
Nov17Cool
Dec15Cool

UV index in Tomar in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tomar peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 15UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar6High
Apr7Very high
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct5Moderate
Nov2Moderate
Dec2Low

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

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodAug 1525 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar12Moderate
Apr10Good
May8Good
Jun17Moderate
Jul17Moderate
Aug26Moderate
Sep12Good
Oct19Moderate
Nov7Good
Dec8Good
Location & terrain

Where is Tomar?

Tomar sits at 39.6°N, 8.4°W, 55 m above sea level, in Portugal. The nearest listed city is Entroncamento, 16 km away.

Topography around Tomar

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

Within 3 km, the terrain around Tomar has only modest variations in elevation — a maximum elevation change of 135 m around an average of 94 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 438 m; within 80 km, large variations in elevation — a maximum elevation change of 1,199 m.

The land around Tomar is covered by grassland (51%) and trees (32%) within 3 km, trees (58%) and grassland (32%) within 16 km, and trees (51%) and grassland (30%) within 80 km.

3 km
135 m
16 km
438 m
80 km
1,199 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Entroncamento 16 km · Torres Novas 18 km · Monsanto 30 km · Leiria 38 km · Pombal 40 km · Santarém 47 km · Marinha Grande 48 km · Alcobaça 49 km

Portugal travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E / F
230 V · 50 Hz
Prices
≈ 60% of US
price level, 2025
GDP per capita
$32,082
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
95%
of population, 2024
Homicide rate
0.7
per 100k, 2022
Road deaths
8.2
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 612
Religion
Catholic 68%not applicable 13%no religion 12%no response 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 Tomar (39.602°, -8.4092°, elevation 55 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).