Osa climate

Osa Weather in May

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

Average highs run from 11°C on May 1 to 17°C on May 31, and lows from 1°C to 8°C. Normal precipitation for the month is 68 mm over about 12 wet days.

May day by day

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

Normal daily high and low temperature at Osa, in °C, with the record for each date.-100102030151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

May at a glance

Average high
15°C
Average low
5°C
Precipitation
68 mm
Reanalysis high
29°CMay 13, 2019
Reanalysis low
-9°CMay 1, 1998
Daylight
15 h 34 min to 17 h 28 min
Cloud cover
64%
Humidity
79%
Dew point
7°C
Wind
11.9 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 111°C1°C21°C 2001-9°C 199836%
May 212°C2°C21°C 2017-6°C 199835%
May 312°C2°C21°C 1994-3°C 200935%
May 413°C2°C22°C 1994-4°C 199935%
May 513°C3°C22°C 2010-5°C 199935%
May 614°C3°C23°C 2010-5°C 199936%
May 714°C3°C22°C 2001-3°C 199336%
May 814°C4°C23°C 1996-4°C 201736%
May 914°C4°C23°C 2020-2°C 199937%
May 1014°C4°C22°C 2019-3°C 199937%
May 1115°C4°C24°C 2019-3°C 199437%
May 1215°C4°C28°C 2019-4°C 201138%
May 1315°C4°C29°C 2019-2°C 201140%
May 1415°C5°C25°C 2010-2°C 201142%
May 1515°C5°C23°C 2005-2°C 199842%
May 1615°C5°C24°C 1995-3°C 201744%
May 1715°C5°C25°C 1995-4°C 199844%
May 1816°C5°C22°C 2005-2°C 199844%
May 1916°C5°C23°C 20050°C 199746%
May 2016°C6°C23°C 2005-2°C 199447%
May 2116°C6°C24°C 2007-3°C 199448%
May 2216°C6°C26°C 2014-2°C 199949%
May 2316°C6°C24°C 1991-2°C 199249%
May 2416°C6°C25°C 1991-2°C 200248%
May 2517°C7°C25°C 2016-2°C 199648%
May 2617°C7°C26°C 2016-2°C 199649%
May 2717°C7°C28°C 1991-1°C 199450%
May 2817°C7°C26°C 20070°C 201750%
May 2917°C7°C27°C 2007-2°C 201750%
May 3017°C8°C26°C 2015-2°C 200251%
May 3117°C8°C28°C 2015-1°C 199451%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Osa, in percent.02040601102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+5).

May 1
sunrise 5:29 AM, sunset 9:03 PM
May 31
sunrise 4:32 AM, sunset 10:00 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.