Colors of the following climate diagrams: Romania United Kingdom
Daily maximum temperatures
The highest daytime temperatures in Romania are reached in July with an average of 28.1 °C. The coldest month, on the other hand, is January, with an average of just 2.4 °C. In the United Kingdom, July is the warmest month, with 18.9 °C. There, it is coolest in January with an average of 7.3 °C.
Night time lows
At night, it cools down to varying degrees depending on the country and altitude. In Romania, temperatures drop as low as -4.5 °C in January. The warmest nights are in July with 15.9 °C. In the United Kingdom, it is coolest at night in February with 2.8 °C and warmest in August with 12.1 °C. This corresponds to a cooling of 6.3 to 12.4 °C in Romania and 4.2 to 7.2 °C in the United Kingdom.
The humidity of the air depends to a large extent on the air temperature. The warmer the air, the more water it can absorb. At a temperature of 25°C it is 23 grams per cubic meter, at 30 degrees it is already 26 grams. Therefore, the air humidity is given as a relative value to the temperature-dependent maximum amount. It becomes unpleasant when high humidity is combined with high temperatures.
Humidex is an approximate, sensed temperature calculated on the basis of air temperature, dew point and humidity. It was developed in 1965 by the Canadian meteorologists J. M. Masterton and F. A. Richardson. Since the wind speed is ignored here, it is not very meaningful in areas below approx. 15°C. Above that, it is more reliable, since at higher temperatures humidity plays a greater role than wind.
Rainy days per month
By definition, a rainy day is a day on which at least 0.1 liters of precipitation per m² fall. This corresponds to a 1 square meter puddle in which the water stands 0.1 mm high - insofar as the water does not seep away or evaporate. So it does not have to rain all day long. May brings the most rainy days (10.0) in Romania. With an average of only 5.8 days, September is the friendliest. In the United Kingdom, it rains most often in December with 15.9 days.
Precipitation amount per day
Depending on the season and the location of a country, the wind brings with it a varying amount of water. As a rule, the water evaporating in the oceans is absorbed and then transported inland. The greatest amount of rain (hail or dew are also forms of precipitation) in Romania occurs in June. Then about 2.9 liters per square meter fall per day. In the United Kingdom, the average amount of precipitation ranges from 1.6 liters per day in April to 3.4 in November. However, these are average values. If you consider that there are only 15.9 rainy days in the United Kingdom in November, each of them accounts for about 6.3 liters.
Sunshine hours per day
With 2117 hours of sunshine per year, Romania is in the lead. The most hours of sunshine (9.2 per day) are in July. The United Kingdom falls into second place with only 1387 hours. There the sun is visible in December even only 1.4 hours per day, so not hidden behind clouds.
Hours of daylight
The length of a day varies throughout the year and depends on the distance from the equator. The length of day measured here is the period between the middle of the morning and evening twilight. In December, the day in Romania is only 9.3 hours long. In June, on the other hand, it is 16.2 hours. In the United Kingdom, it is 8.0 hours in December and 18.1 in June.