Viseu climate

Viseu Weather in May

NASA POWER reanalysis for the half-degree grid cell around Viseu, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 28°C on May 1 to 28°C on May 31, and lows from 25°C to 26°C. Normal precipitation for the month is 329 mm over about 28 wet days.

May day by day

The normal high and low for each date, in °C.

Normal daily high and low temperature at Viseu, in °C, with the record for each date.24262830151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

May at a glance

Average high
28°C
Average low
26°C
Precipitation
329 mm
Reanalysis high
30°CMay 6, 1998
Reanalysis low
24°CMay 25, 2018
Daylight
12 h 04 min to 12 h 03 min
Cloud cover
66%
Humidity
89%
Dew point
25°C
Wind
10.1 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
May 128°C25°C29°C 199825°C 200898%
May 228°C25°C29°C 201324°C 199998%
May 328°C25°C29°C 201425°C 199498%
May 428°C26°C29°C 199824°C 200998%
May 528°C26°C30°C 199825°C 199697%
May 628°C26°C30°C 199824°C 199797%
May 728°C26°C30°C 202024°C 199997%
May 828°C26°C29°C 199825°C 199997%
May 928°C26°C30°C 201025°C 201896%
May 1028°C26°C29°C 201024°C 199496%
May 1128°C26°C29°C 201624°C 199995%
May 1228°C26°C29°C 199824°C 199995%
May 1328°C26°C30°C 199824°C 199494%
May 1428°C26°C30°C 201025°C 200894%
May 1528°C26°C30°C 201024°C 200994%
May 1628°C26°C29°C 200424°C 199493%
May 1728°C26°C29°C 201624°C 199993%
May 1828°C26°C29°C 199824°C 199993%
May 1928°C26°C29°C 201625°C 199993%
May 2028°C26°C30°C 200425°C 199592%
May 2128°C26°C29°C 201724°C 199592%
May 2228°C26°C30°C 201725°C 199592%
May 2328°C26°C30°C 201024°C 199592%
May 2428°C26°C30°C 201025°C 199692%
May 2528°C26°C29°C 201624°C 201892%
May 2628°C26°C30°C 201024°C 200991%
May 2728°C26°C30°C 199825°C 199690%
May 2828°C26°C30°C 199825°C 199691%
May 2928°C26°C29°C 199824°C 199691%
May 3028°C26°C29°C 201524°C 199691%
May 3128°C26°C29°C 201525°C 200990%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Viseu, in percent.0204060801001102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-3).

May 1
sunrise 6:00 AM, sunset 6:04 PM
May 31
sunrise 6:01 AM, sunset 6:04 PM

Every day of May: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.