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September Weather in Debrecen Hungary

Daily high temperatures decrease by 9°F, from 75°F to 66°F, rarely falling below 57°F or exceeding 86°F.

Daily low temperatures decrease by 7°F, from 55°F to 48°F, rarely falling below 40°F or exceeding 62°F.

For reference, on July 31, the hottest day of the year, temperatures in Debrecen typically range from 61°F to 81°F, while on January 21, the coldest day of the year, they range from 24°F to 35°F.

Average High and Low Temperature in September in Debrecen

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in September in Debrecen

Average Hourly Temperature in September in DebrecenSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOctvery coldcoldcoolcomfortablewarmcomfortablevery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Bear Rocks, Pennsylvania, United States (4,697 miles away) is the far-away foreign place with temperatures most similar to Debrecen (view comparison).

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The month of September in Debrecen experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 38% to 46%.

The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 62% of the time.

For reference, on December 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 64%, while on August 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.

Cloud Cover Categories in September in Debrecen

Cloud Cover Categories in September in DebrecenSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctSep 162%Sep 162%Sep 3054%Sep 3054%Sep 1158%Sep 1158%Sep 2156%Sep 2156%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Debrecen, the chance of a wet day over the course of September is essentially constant, remaining around 21% throughout.

For reference, the year's highest daily chance of a wet day is 33% on June 10, and its lowest chance is 14% on February 29.

Probability of Precipitation in September in Debrecen

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during September in Debrecen is essentially constant, remaining about 1.5 inches throughout, and rarely exceeding 3.0 inches or falling below 0.3 inches.

Average Monthly Rainfall in September in Debrecen

Average Monthly Rainfall in September in DebrecenSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 in4.0 in4.0 inAugOctSep 11.5 inSep 11.5 inSep 301.4 inSep 301.4 inSep 111.5 inSep 111.5 inSep 211.5 inSep 211.5 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of September in Debrecen, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 38 minutes, implying an average daily decrease of 3 minutes, 23 seconds, and weekly decrease of 23 minutes, 38 seconds.

The shortest day of the month is September 30, with 11 hours, 43 minutes of daylight and the longest day is September 1, with 13 hours, 21 minutes of daylight.

Hours of Daylight and Twilight in September in Debrecen

Hours of Daylight and Twilight in September in DebrecenSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 10 minSep 2212 hr, 10 minnightnightdaydaySep 113 hr, 21 minSep 113 hr, 21 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Debrecen is 5:52 AM on September 1 and the latest sunrise is 39 minutes later at 6:31 AM on September 30.

The latest sunset is 7:13 PM on September 1 and the earliest sunset is 59 minutes earlier at 6:14 PM on September 30.

Daylight saving time is observed in Debrecen during 2024, but it neither starts nor ends during September, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 4:35 AM and sets 15 hours, 59 minutes later, at 8:34 PM, while on December 21, the shortest day of the year, it rises at 7:18 AM and sets 8 hours, 26 minutes later, at 3:44 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in September in Debrecen

Sunrise & Sunset with Twilight and Daylight Saving Time in September in DebrecenSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct5:52 AM5:52 AMSep 17:13 PMSep 17:13 PM6:31 AM6:31 AMSep 306:14 PMSep 306:14 PM6:05 AM6:05 AMSep 116:53 PMSep 116:53 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of September. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in September in Debrecen

Solar Elevation and Azimuth in September in DebrecenSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOct001010202030304050001010202030304050
northeastsouthwest
Solar elevation and azimuth over the course of September 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for September 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in September in Debrecen

Moon Rise, Set & Phases in September in DebrecenSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 41:14 PMAug 41:14 PMAug 198:26 PMAug 198:26 PMSep 33:56 AMSep 33:56 AMSep 184:35 AMSep 184:35 AMOct 28:50 PMOct 28:50 PMOct 171:27 PMOct 171:27 PM4:40 AM4:40 AM8:30 PM8:30 PM7:51 PM7:51 PM6:03 AM6:03 AM5:59 AM5:59 AM7:27 PM7:27 PM6:33 PM6:33 PM6:23 AM6:23 AM6:02 AM6:02 AM6:01 PM6:01 PM5:30 PM5:30 PM8:11 AM8:11 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Sep 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
3%3:40 AMENE6:56 PMWNW-11:24 AMS248,694 mi
2
0%4:51 AMENE7:13 PMWNW-12:06 PMS250,192 mi
3
0%5:59 AMENE7:27 PMW-12:47 PMS251,338 mi
4
2%7:05 AME7:40 PMW-1:25 PMS252,095 mi
5
5%8:11 AME7:53 PMW-2:04 PMS252,403 mi
6
10%9:16 AMESE8:07 PMWSW-2:43 PMS252,190 mi
7
17%10:23 AMESE8:23 PMWSW-3:24 PMS251,381 mi
8
25%11:32 AMESE8:42 PMWSW-4:07 PMS249,910 mi
9
34%12:42 PMSE9:07 PMSW-4:55 PMS247,745 mi
10
44%1:53 PMSE9:41 PMSW-5:47 PMS244,899 mi
11
50%3:00 PMSE10:26 PMSW-6:43 PMS241,455 mi
12
65%3:59 PMSE11:26 PMSW-7:43 PMS237,579 mi
13
76%4:46 PMSE--8:43 PMS233,521 mi
14
85%-12:40 AMSW5:23 PMSE9:43 PMS229,610 mi
15
93%-2:03 AMSW5:51 PMESE10:40 PMS226,207 mi
16
98%-3:29 AMWSW6:14 PMESE11:34 PMS223,661 mi
17
99%-4:56 AMWSW6:33 PME--
18
100%-6:23 AMW6:51 PME12:26 AMS222,245 mi
19
99%-7:50 AMW7:09 PMENE1:16 AMS222,109 mi
20
95%-9:17 AMWNW7:30 PMENE2:08 AMS223,245 mi
21
88%-10:45 AMWNW7:54 PMENE3:00 AMS225,497 mi
22
78%-12:11 PMNW8:26 PMNE3:55 AMS228,592 mi
23
68%-1:31 PMNW9:08 PMNE4:53 AMS232,199 mi
24
50%-2:39 PMNW10:03 PMNE5:52 AMS235,981 mi
25
46%-3:32 PMNW11:07 PMNE6:49 AMS239,650 mi
26
35%-4:12 PMNW-7:45 AMS242,990 mi
27
26%12:18 AMNE4:41 PMNW-8:36 AMS245,868 mi
28
17%1:30 AMENE5:03 PMWNW-9:23 AMS248,222 mi
29
10%2:41 AMENE5:20 PMWNW-10:06 AMS250,043 mi
30
5%3:50 AMENE5:35 PMWNW-10:46 AMS251,351 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Debrecen is essentially constant during September, remaining within 1% of 1% throughout.

For reference, on July 24, the muggiest day of the year, there are muggy conditions 11% of the time, while on October 11, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in September in Debrecen

Humidity Comfort Levels in September in DebrecenSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 12%Sep 12%Sep 300%Sep 300%Sep 111%Sep 111%Sep 210%Sep 210%muggymuggyhumidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Debrecen is essentially constant during September, remaining within 0.1 miles per hour of 7.2 miles per hour throughout.

For reference, on March 15, the windiest day of the year, the daily average wind speed is 8.7 miles per hour, while on August 10, the calmest day of the year, the daily average wind speed is 6.5 miles per hour.

Average Wind Speed in September in Debrecen

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Debrecen during September is predominantly out of the west from September 1 to September 11, the north from September 11 to September 17, and the south from September 17 to September 30.

Wind Direction in September in Debrecen

Wind Direction in September in DebrecenNWNSSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOctwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Debrecen typically lasts for 6.6 months (201 days), from around April 3 to around October 22, rarely starting before March 11 or after April 25, and rarely ending before October 5 or after November 8.

The month of September in Debrecen is very likely fully within the growing season, with the chance that a given day is in the growing season gradually decreasing from 100% to 95% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in September in Debrecen

Time Spent in Various Temperature Bands and the Growing Season in September in Debrecengrowing seasonSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOct100%Sep 1100%Sep 195%Sep 3095%Sep 30100%Sep 11100%Sep 1199%Sep 2199%Sep 2150%Oct 2250%Oct 22very coldcoldcoolcomfortablewarmhotfreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Debrecen are increasing during September, increasing by 329°F, from 2,302°F to 2,632°F, over the course of the month.

Growing Degree Days in September in Debrecen

Growing Degree Days in September in DebrecenSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302,000°F2,000°F2,200°F2,200°F2,400°F2,400°F2,600°F2,600°F2,800°F2,800°F3,000°F3,000°FAugOctSep 12,302°FSep 12,302°FSep 302,632°FSep 302,632°FSep 112,439°FSep 112,439°F
The average growing degree days accumulated over the course of September, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Debrecen is rapidly decreasing during September, falling by 1.5 kWh, from 5.1 kWh to 3.5 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in September in Debrecen

Average Daily Incident Shortwave Solar Energy in September in DebrecenSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAugOctSep 15.1 kWhSep 15.1 kWhSep 303.5 kWhSep 303.5 kWhSep 114.5 kWhSep 114.5 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Debrecen are 47.533 deg latitude, 21.633 deg longitude, and 404 ft elevation.

The topography within 2 miles of Debrecen contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 394 feet. Within 10 miles also contains only modest variations in elevation (256 feet). Within 50 miles contains only modest variations in elevation (2,251 feet).

The area within 2 miles of Debrecen is covered by artificial surfaces (97%), within 10 miles by cropland (56%) and trees (29%), and within 50 miles by cropland (63%) and grassland (15%).

This report illustrates the typical weather in Debrecen, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Debrecen.

For each station, the records are corrected for the elevation difference between that station and Debrecen according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Debrecen is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Debrecen and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Debrecen and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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