Harghita County

Miercurea-Ciuc, Romania Climate

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

The warmest month is August, with an average high of 25°C; the coldest is January, with an average low of -8°C. A normal year brings 632 mm of precipitation.

Temperature through the year

The normal daily high and low. The line marks today.

Normal daily high and low temperature at Miercurea-Ciuc through the year, in °C, with the record for each date.-40-2002040JanFebMarAprMayJunJulAugSepOctNovDec
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

Normals for Sep 26

Normal high
17°C
Normal low
6°C
Reanalysis high
24°Cin 1994
Reanalysis low
-1°Cin 2000
Chance of a wet day
30%
Daylight
11 h 58 min

Month by month

Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.

MonthAvg highAvg lowWarmestColdestPrecipitationWet days
January-1°C-8°C13°C (2001)-27°C (2010)25 mm6.2
February1°C-8°C14°C (1998)-26°C (2012)25 mm5.7
March6°C-4°C22°C (1991)-23°C (2018)37 mm9.3
April12°C1°C26°C (2012)-8°C (2003)51 mm12.0
May18°C7°C29°C (2003)-5°C (1995)78 mm15.5
June22°C11°C34°C (2002)3°C (2000)99 mm18.0
July24°C12°C35°C (2007)4°C (1993)87 mm15.5
August25°C12°C35°C (2012)4°C (1993)65 mm12.4
September19°C8°C33°C (2015)-3°C (2017)51 mm9.0
October13°C3°C26°C (2012)-9°C (1991)50 mm9.3
November7°C-2°C21°C (2018)-19°C (1993)30 mm6.0
December1°C-7°C13°C (2019)-26°C (1996)34 mm6.2
Year12°C2°C632 mm125

Precipitation

Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.

632 mm in a normal year, most in June.

Chance of a wet day

The chance of at least 1 mm of precipitation in the reanalysis on each date at Miercurea-Ciuc, in percent.0204060JanFebMarAprMayJunJulAugSepOctNovDec
  • Chance of a wet day

Humidity and comfort

NASA POWER reanalysis, 1991-2020, for the grid cell around Miercurea-Ciuc.

Days with a mean dew point of 18°C or more are rare here in every month.

MonthDew pointHumidityDryComfortableHumidMuggyOppressiveMiserable
January-7°C91%100%0%0%0%0%0%
February-6°C88%100%0%0%0%0%0%
March-3°C81%100%0%0%0%0%0%
April2°C75%100%0%0%0%0%0%
May7°C71%98%2%0%0%0%0%
June10°C70%78%18%4%0%0%0%
July11°C66%71%25%5%0%0%0%
August10°C64%81%16%3%0%0%0%
September7°C69%99%1%0%0%0%0%
October3°C78%100%0%0%0%0%0%
November-1°C85%100%0%0%0%0%0%
December-5°C90%100%0%0%0%0%0%

Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.

Clouds

Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.

The clearest month is August, with the sky 48 percent covered on average; the cloudiest is February, at 71 percent.

Wind

The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.

The windiest month is January, averaging 9.7 km/h at 10 meters (33 feet) above the ground.

Daylight and sunshine

The longest day is Jun 20, with 15 h 49 min of daylight; the shortest is Dec 20, with 8 h 35 min.

Hours of daylight at Miercurea-Ciuc through the year.0510152025JanFebMarAprMayJunJulAugSepOctNovDec
  • Day length

Solar energy

Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.

Sunrise and sunset calendar

Month pages

The weather in Miercurea-Ciuc in each month, day by day.

What this means

A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.

Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.

Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.

More for this place

Nearby

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.