Summer weather

Calculations are based on the last 8 years of historical weather data.

Temperatures

Maximum Temperatures

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	72.7°F	80.8°F	79.0°F	79.3°F
Jun 8	74.8°F	82.2°F	81.5°F	81.5°F
Jun 15	75.7°F	83.8°F	82.2°F	82.8°F
Jun 22	77.4°F	82.9°F	82.6°F	82.9°F
Jul 1	80.6°F	83.8°F	84.2°F	84.6°F
Jul 8	80.1°F	82.9°F	83.3°F	83.5°F
Jul 15	82.2°F	84.9°F	85.3°F	85.8°F
Jul 22	84.6°F	87.6°F	88.0°F	88.0°F
Aug 1	86.2°F	90.9°F	90.0°F	90.1°F
Aug 8	84.6°F	86.7°F	87.4°F	87.6°F
Aug 15	84.6°F	87.3°F	87.3°F	87.4°F
Aug 22	81.3°F	81.9°F	82.6°F	83.1°F
Average	84.6°F	84.7°F	80.4°F	84.4°F

Minimum Temperatures

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	63.5°F	58.1°F	62.2°F	62.8°F
Jun 8	65.7°F	60.3°F	64.8°F	64.8°F
Jun 15	67.1°F	61.0°F	65.8°F	66.4°F
Jun 22	69.6°F	65.1°F	68.9°F	69.3°F
Jul 1	71.6°F	67.1°F	71.1°F	71.1°F
Jul 8	72.7°F	68.4°F	71.8°F	72.1°F
Jul 15	74.7°F	69.4°F	73.2°F	73.9°F
Jul 22	77.0°F	71.2°F	76.1°F	76.5°F
Aug 1	78.3°F	73.0°F	77.2°F	77.9°F
Aug 8	77.4°F	71.6°F	75.9°F	76.1°F
Aug 15	76.1°F	69.3°F	74.1°F	74.7°F
Aug 22	73.6°F	67.5°F	71.4°F	71.8°F
Average	66.8°F	71.5°F	72.3°F	71.0°F

Maximum/minimum temperature averages are computed by averaging the max/min temperature of each day for a given period.

Conditions

Sunny Weather

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	9.7 hours/day	8.8 hours/day	9.6 hours/day	9.6 hours/day
Jun 8	8.5 hours/day	7.3 hours/day	8.0 hours/day	8.0 hours/day
Jun 15	8.8 hours/day	8.4 hours/day	8.7 hours/day	8.5 hours/day
Jun 22	6.8 hours/day	3.9 hours/day	5.6 hours/day	5.6 hours/day
Jul 1	6.6 hours/day	4.4 hours/day	5.7 hours/day	5.7 hours/day
Jul 8	3.7 hours/day	1.8 hours/day	2.6 hours/day	2.5 hours/day
Jul 15	5.6 hours/day	3.3 hours/day	4.3 hours/day	4.1 hours/day
Jul 22	4.8 hours/day	4.2 hours/day	4.2 hours/day	3.6 hours/day
Aug 1	6.7 hours/day	4.6 hours/day	5.5 hours/day	4.9 hours/day
Aug 8	4.3 hours/day	3.4 hours/day	3.5 hours/day	3.2 hours/day
Aug 15	5.6 hours/day	5.0 hours/day	4.9 hours/day	4.0 hours/day
Aug 22	4.5 hours/day	3.4 hours/day	4.5 hours/day	4.3 hours/day
Average	4.9 hours/day	5.3 hours/day	6.3 hours/day	5.6 hours/day

Sun hours are computed from the number of hours of direct sunlight. The length of the day can affect these measurements; for example, northern cities have longer days in summer.

Precipitation Levels

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	0.1in	0.1in	0.1in	0.1in
Jun 8	0.1in	0.1in	0.1in	0.1in
Jun 15	0.1in	0.0in	0.0in	0.1in
Jun 22	0.4in	0.3in	0.4in	0.4in
Jul 1	0.4in	0.4in	0.4in	0.4in
Jul 8	0.5in	0.7in	0.6in	0.5in
Jul 15	0.4in	0.5in	0.4in	0.4in
Jul 22	0.4in	0.3in	0.4in	0.4in
Aug 1	0.4in	0.2in	0.4in	0.4in
Aug 8	0.6in	0.5in	0.6in	0.6in
Aug 15	0.4in	0.2in	0.4in	0.4in
Aug 22	0.4in	0.5in	0.4in	0.4in
Average	0.3in	0.4in	0.3in	0.3in

Average amount of precipitation that falls in a form of a rain, snow, sleet or hail.

Wind Speed

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	12.1mph	8.8mph	10.3mph	10.4mph
Jun 8	11.5mph	7.8mph	9.6mph	9.3mph
Jun 15	11.0mph	8.2mph	9.6mph	9.7mph
Jun 22	12.1mph	8.2mph	9.6mph	9.7mph
Jul 1	12.2mph	8.7mph	9.4mph	9.8mph
Jul 8	10.8mph	8.1mph	8.9mph	9.0mph
Jul 15	11.6mph	7.2mph	9.1mph	9.3mph
Jul 22	11.1mph	7.1mph	8.8mph	8.9mph
Aug 1	10.8mph	7.2mph	8.6mph	8.7mph
Aug 8	11.0mph	7.6mph	8.6mph	8.6mph
Aug 15	11.6mph	7.5mph	8.4mph	8.9mph
Aug 22	11.8mph	7.9mph	9.0mph	9.1mph
Average	7.9mph	9.3mph	11.5mph	9.2mph

Humidity

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	70.9%	66.9%	58.3%	55.8%
Jun 8	71.8%	71.2%	60.3%	57.8%
Jun 15	73.7%	70.9%	62.3%	59.0%
Jun 22	78.5%	78.2%	69.5%	66.5%
Jul 1	79.8%	80.3%	72.4%	68.1%
Jul 8	83.5%	85.6%	78.8%	74.8%
Jul 15	81.0%	83.5%	75.6%	70.9%
Jul 22	79.8%	81.2%	73.0%	68.8%
Aug 1	79.0%	79.4%	72.0%	67.3%
Aug 8	77.9%	82.2%	75.0%	70.0%
Aug 15	75.2%	79.7%	71.7%	66.3%
Aug 22	73.7%	82.8%	72.9%	67.4%
Average	78.5%	66.1%	77.1%	70.1%

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Astronomy

Sunrise Time

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	5:13	5:14	5:12	5:12
Jun 8	5:12	5:13	5:11	5:10
Jun 15	5:12	5:13	5:11	5:11
Jun 22	5:14	5:14	5:13	5:13
Jul 1	5:17	5:18	5:16	5:16
Jul 8	5:22	5:22	5:20	5:20
Jul 15	5:26	5:26	5:25	5:25
Jul 22	5:33	5:33	5:31	5:32
Aug 1	5:40	5:40	5:38	5:38
Aug 8	5:46	5:45	5:44	5:44
Aug 15	5:52	5:50	5:50	5:50
Aug 22	5:59	5:58	5:57	5:58
Average	5:30	5:30	5:30	5:30

Sunrise times are output in the local timezone of each place.

Sunset Time

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	19:50	19:44	19:48	19:50
Jun 8	19:55	19:49	19:52	19:53
Jun 15	19:57	19:51	19:54	19:56
Jun 22	19:59	19:52	19:56	19:57
Jul 1	19:58	19:52	19:55	19:57
Jul 8	19:56	19:50	19:53	19:55
Jul 15	19:53	19:47	19:50	19:52
Jul 22	19:47	19:41	19:44	19:46
Aug 1	19:39	19:34	19:37	19:38
Aug 8	19:31	19:26	19:29	19:30
Aug 15	19:23	19:18	19:20	19:22
Aug 22	19:11	19:07	19:08	19:10
Average	19:42	19:42	19:42	19:42

Sunset times are output in the local timezone of each place.

Useful Day Length

Period	Incheon	Daejeon	Tongjin	Goyang
Jun 1	12:50 hours	12:44 hours	12:48 hours	12:50 hours
Jun 8	12:55 hours	12:49 hours	12:52 hours	12:53 hours
Jun 15	12:57 hours	12:51 hours	12:54 hours	12:56 hours
Jun 22	12:59 hours	12:52 hours	12:56 hours	12:57 hours
Jul 1	12:58 hours	12:52 hours	12:55 hours	12:57 hours
Jul 8	12:56 hours	12:50 hours	12:53 hours	12:55 hours
Jul 15	12:53 hours	12:47 hours	12:50 hours	12:52 hours
Jul 22	12:47 hours	12:41 hours	12:44 hours	12:46 hours
Aug 1	12:39 hours	12:34 hours	12:37 hours	12:38 hours
Aug 8	12:31 hours	12:26 hours	12:29 hours	12:30 hours
Aug 15	12:23 hours	12:18 hours	12:20 hours	12:22 hours
Aug 22	12:11 hours	12:07 hours	12:08 hours	12:10 hours
Average	12:42 hours	12:42 hours	12:42 hours	12:42 hours

Discards daylight hours before 7 AM. In places that are located to the west of the timezone, the sun rises and sets later compared to the cities that are located to the east. This means that the useful day length is longer in the cities located to the west of the time zone.

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