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Weather & Climate in Conception Bay South, NL
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Conception Bay South has a cool climate with an average annual temperature of 45°F (7°C). Winters average 32°F in January while summers reach 63°F in July. The area gets 165 sunny days per year, below the national average of 205. Annual precipitation totals 57.6 inches (wetter than the 38-inch national average). The area receives 83.4 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 161 feet.
Temperature
32°F Jan (0°C)
63°F Jul (17°C)
| Annual Average | 44.5°F |
| 18% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 165 days/yr |
Geography
| Elevation | 161 ft (49 m) |
| Area | 23.1 sq mi (59.7 km²) |
| Population Density | 1,178/sq mi |
| Coordinates | 47.4999°N, 52.9981°W |
| Timezone | America/St_Johns |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| Apr 29, 2009 | 28 km SW of Bay Roberts, Canada | M3.3 | 39 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
6 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Ernesto | Category 1 | 86 mph | 157 km |
| 2021 | Larry | Category 1 | 81 mph | 123 km |
| 2014 | Gonzalo | Category 1 | 81 mph | 148 km |
| 2010 | Igor | Category 1 | 86 mph | 101 km |
| 1982 | Debby | Category 2 | 104 mph | 160 km |
| 1980 | Georges | Category 1 | 81 mph | 256 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1864 | SW AVALON PENINSULA, NEWFOUNDLAND | Earthquake | — | — | 123 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 5.6 in | |
| February | 22°F (-5°C) | 4.8 in | Coldest |
| March | 27°F (-3°C) | 5.0 in | |
| April | 35°F (2°C) | 4.7 in | |
| May | 44°F (7°C) | 4.1 in | |
| June | 52°F (11°C) | 4.2 in | |
| July | 63°F (17°C) | 3.9 in | Warmest, Driest |
| August | 60°F (16°C) | 3.9 in | |
| September | 54°F (12°C) | 5.1 in | |
| October | 45°F (7°C) | 5.7 in | Wettest |
| November | 37°F (3°C) | 5.4 in | |
| December | 29°F (-2°C) | 5.6 in |
Conception Bay South has a seasonal temperature swing of 41°F / from 22°F in February to 63°F in July. Total annual precipitation is 58.0 inches, with October being the wettest month (5.7") and July the driest (3.9").