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Weather & Climate in Nederzwalm-Hermelgem, Belgium
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Nederzwalm-Hermelgem experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 42°F in January while summers reach 65°F in July. The area gets 221 sunny days per year, above the national average. Annual precipitation totals 40.5 inches. The area receives 6.8 inches of snow annually. The city sits at an elevation of 39 feet.
Temperature
42°F Jan (6°C)
65°F Jul (19°C)
| Annual Average | 53.5°F |
| 1% below US avg | |
| January Average | 42°F (6°C) |
| July Average | 65°F (19°C) |
| Sunny Days | 221 days/yr |
Geography
| Elevation | 39 ft (12 m) |
| Area | 3.1 sq mi (8.1 km²) |
| Population Density | 301/sq mi |
| Coordinates | 50.8833°N, 3.6833°W |
| Timezone | Europe/Brussels |
Precipitation & Snow
Air Quality
Earthquake History
65 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Jun 23, 2001 | 2 km ENE of Niel-bij-As, Belgium | M4.8 | 138 km | 10 km |
| Jun 20, 1995 | 1 km N of Ghlin, Belgium | M4.3 | 47 km | 20 km |
| Jan 23, 2007 | 57 km ENE of Broadstairs, United Kingdom | M4.1 | 137 km | 10 km |
| Aug 29, 1992 | 4 km SSE of Cousolre, France | M4.1 | 83 km | 18 km |
| Dec 14, 1991 | 3 km SSE of Longfossé, France | M4.0 | 134 km | 10 km |
| Jun 23, 2001 | 1 km SW of Ulestraten, Netherlands | M4.0 | 146 km | 10 km |
| Aug 26, 1992 | 2 km WSW of Rance, Belgium | M3.9 | 93 km | 10 km |
| Jul 13, 2008 | 0 km ESE of Court-Saint-Étienne, Belgium | M3.8 | 69 km | 4 km |
| Jun 23, 2001 | 0 km E of Berg, Netherlands | M3.6 | 148 km | 10 km |
| Apr 19, 1990 | 0 km SSW of Flémalle-Haute, Belgium | M3.6 | 128 km | 10 km |
| Jan 27, 1992 | 6 km SSE of Longfossé, France | M3.5 | 133 km | 10 km |
| Apr 14, 1992 | 2 km SW of Kinrooi, Belgium | M3.5 | 145 km | 10 km |
| Jul 20, 1994 | 2 km N of Rousies, France | M3.5 | 69 km | 5 km |
| Apr 13, 1992 | Belgium | M3.4 | 148 km | 10 km |
| Jun 11, 1993 | 2 km ESE of Sint-Huibrechts-Lille, Belgium | M3.3 | 134 km | 10 km |
| Jul 14, 2008 | 1 km SW of Boussu, Belgium | M3.2 | 52 km | 4 km |
| Aug 10, 1991 | 1 km S of Vottem, Belgium | M3.2 | 135 km | 10 km |
| Nov 10, 2001 | 3 km WNW of Opgrimbie, Belgium | M3.2 | 137 km | 10 km |
| Feb 27, 2005 | 1 km NW of Libercourt, France | M3.1 | 65 km | 4 km |
| Jul 2, 2001 | 3 km NNE of Oostduinkerke, Belgium | M3.1 | 75 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1858 | NORTH SEA | Unknown | 6.0 m | — | 146 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 2.6 in | |
| February | 38°F (4°C) | 2.0 in | Coldest, Driest |
| March | 44°F (7°C) | 2.6 in | |
| April | 48°F (9°C) | 2.0 in | |
| May | 56°F (13°C) | 2.4 in | |
| June | 61°F (16°C) | 3.0 in | |
| July | 65°F (19°C) | 2.7 in | Warmest |
| August | 65°F (18°C) | 2.3 in | |
| September | 59°F (15°C) | 2.6 in | |
| October | 52°F (11°C) | 3.0 in | |
| November | 44°F (7°C) | 3.2 in | Wettest |
| December | 40°F (4°C) | 3.0 in |
Nederzwalm-Hermelgem has a seasonal temperature swing of 27°F / from 38°F in February to 65°F in July. Total annual precipitation is 31.3 inches, with November being the wettest month (3.2") and February the driest (2.0").