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Roes Welcome Sound
Roes Welcome Sound
	The Roes Welcome Sound in 2017
	Roes Welcome Sound
Coordinates	65°01′N 086°40′W / 65.017°N 86.667°W
Basin countries	Canada
Max. length	290 km (180 mi)
Max. width	24 to 113 km (15 to 70 mi)
Settlements	Uninhabited

Roes Welcome Sound is a long channel at the northwest end of Hudson Bay in the Kivalliq Region, Nunavut, Canada between the mainland on the west and Southampton Island on the east. It opens south into Hudson Bay. Its north end joins Repulse Bay^[2] which is connected east through Frozen Strait to Foxe Basin, thereby making Southampton Island an island. Wager Bay is a western branch. It is situated 200 km (120 mi) north of Marble Island.^[3] Roes Welcome Sound measures 290 km (180 mi) long, and 24 to 113 km (15 to 70 mi) wide.^[4]

In 1613 it was reached by Thomas Button who called it 'Ne Ultra'. It is named after Sir Thomas Roe, friend and sponsor of explorer Luke Foxe's 1631 Arctic voyage.^[5]^[6] Captain William Edward Parry, trying to find the Northwest Passage during his 1821 voyage, wrote:^[7]

On an inspection of the charts, I think it will also appear probable that a communication will one day be found to exist between this inlet (Prince Regent's) and Hudson's Bay, either through the broad and unexplored channel called Sir Thomas Roe's Welcome, or through Repulse Bay, which has not yet been satisfactorily examined.
— William Edward Parry, Arctic explorations and discoveries during the nineteenth century.

Roes Welcome Sound is a bowhead whale migratory path.^[8]

Climate

Naujaat to the north has a tundra climate (Köppen ET) with short but cool summers and long, cold winters.

Climate data for Naujaat (Naujaat Airport) Climate ID: 2403490 ; coordinates 66°31′17″N 86°13′29″W / 66.52139°N 86.22472°W / 66.52139; -86.22472 (Repulse Bay Airport); elevation: 22.9 m (75 ft); 1981–2010 normals
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Record high humidex	−4.6	−11.6	−2.1	2.4	7.9	21.1	29.3	21.9	15.4	4.2	0.4	−1.0	29.3
Record high °C (°F)	−1.7 (28.9)	−11.0 (12.2)	−1.5 (29.3)	3.5 (38.3)	8.0 (46.4)	22.5 (72.5)	28.0 (82.4)	22.0 (71.6)	15.5 (59.9)	4.0 (39.2)	0.0 (32.0)	1.1 (34.0)	28.0 (82.4)
Mean daily maximum °C (°F)	−28.2 (−18.8)	−28.0 (−18.4)	−22.4 (−8.3)	−12.8 (9.0)	−3.6 (25.5)	6.2 (43.2)	13.1 (55.6)	10.3 (50.5)	3.3 (37.9)	−4.4 (24.1)	−15.2 (4.6)	−22.3 (−8.1)	−8.7 (16.3)
Daily mean °C (°F)	−31.3 (−24.3)	−31.4 (−24.5)	−26.4 (−15.5)	−17.1 (1.2)	−6.9 (19.6)	3.0 (37.4)	8.8 (47.8)	6.8 (44.2)	0.9 (33.6)	−7.3 (18.9)	−18.8 (−1.8)	−25.8 (−14.4)	−12.1 (10.2)
Mean daily minimum °C (°F)	−34.1 (−29.4)	−34.6 (−30.3)	−30.4 (−22.7)	−21.4 (−6.5)	−10.2 (13.6)	−0.1 (31.8)	4.4 (39.9)	3.2 (37.8)	−1.5 (29.3)	−10.2 (13.6)	−22.2 (−8.0)	−29.3 (−20.7)	−15.5 (4.1)
Record low °C (°F)	−47.8 (−54.0)	−50.0 (−58.0)	−45.0 (−49.0)	−40.0 (−40.0)	−27.0 (−16.6)	−11.0 (12.2)	−1.0 (30.2)	−3.0 (26.6)	−11.5 (11.3)	−31.0 (−23.8)	−42.0 (−43.6)	−46.0 (−50.8)	−50.0 (−58.0)
Record low wind chill	−66.3	−63.7	−59.5	−49.7	−30.2	−18.7	0.0	−8.3	−18.1	−41.1	−50.1	−59.2	−66.3
Average precipitation mm (inches)	18.4 (0.72)	14.8 (0.58)	18.6 (0.73)	24.3 (0.96)	18.5 (0.73)	28.9 (1.14)	29.0 (1.14)	46.4 (1.83)	33.6 (1.32)	28.2 (1.11)	29.2 (1.15)	21.4 (0.84)	311.3 (12.26)
Average rainfall mm (inches)	0.0 (0.0)	0.0 (0.0)	0.0 (0.0)	0.4 (0.02)	1.9 (0.07)	23.3 (0.92)	29.0 (1.14)	46.1 (1.81)	22.3 (0.88)	0.8 (0.03)	0.0 (0.0)	0.0 (0.0)	123.8 (4.87)
Average snowfall cm (inches)	18.8 (7.4)	19.1 (7.5)	21.7 (8.5)	27.7 (10.9)	19.7 (7.8)	5.5 (2.2)	0.0 (0.0)	0.3 (0.1)	12.6 (5.0)	32.6 (12.8)	32.9 (13.0)	24.6 (9.7)	215.4 (84.8)
Average precipitation days (≥ 0.2 mm)	10.3	6.7	11.0	9.9	9.4	8.4	9.6	11.8	11.1	13.7	11.3	10.3	123.4
Average rainy days (≥ 0.2 mm)	0.0	0.0	0.0	0.2	0.8	6.5	9.6	11.8	7.1	0.6	0.1	0.0	36.5
Average snowy days (≥ 0.2 cm)	10.2	7.3	11.6	10.7	9.2	2.3	0.0	0.2	4.8	13.1	11.8	10.5	91.6
Average relative humidity (%)	74.2	71.9	73.5	80.9	82.7	78.1	65.3	71.1	81.1	85.9	79.1	76.0	76.7
Source: Environment and Climate Change Canada Canadian Climate Normals 1981–2010^[9]