What are the differences in astronomy conditions (sunrise, sunset) between Seoul, Busan, Incheon, Daegu, Gwangju, 5 more?

In the summer months, cities like Ulsan and Daegu experience the earliest sunrises around 05:07 and 05:09 respectively, while the latest sunrises occur in January, with Incheon reaching as late as 07:45. The longest days also occur in June, with Goyang having the longest day length at 14 hours and 42 minutes, slightly more than other cities. Interestingly, Seoul and Incheon have some of the latest sunsets in June at 19:54 and 19:55, while the shortest day lengths in December tend to be around 09 hours and 37 minutes for cities like Goyang and Seoul. Overall, there is a consistent pattern of longer days and earlier sunrises during the summer months, while winter brings shorter days and later sunrises across these South Korean cities.

Korea, South - weather forecast and comparison

Yearly weather

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

Temperatures

Maximum Temperatures

Period	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	35.4°F	44.9°F	35.9°F	41.1°F	41.0°F	37.7°F	35.9°F	42.9°F	35.9°F	35.4°F
Feb	40.2°F	47.6°F	39.2°F	45.3°F	45.1°F	41.9°F	40.6°F	46.2°F	40.6°F	40.2°F
Mar	53.6°F	55.2°F	49.4°F	57.2°F	56.3°F	54.8°F	53.7°F	55.7°F	53.6°F	53.6°F
Apr	64.2°F	61.8°F	59.3°F	67.1°F	66.0°F	65.6°F	64.2°F	64.2°F	64.2°F	64.0°F
May	73.9°F	68.5°F	68.0°F	76.2°F	74.4°F	74.6°F	73.5°F	72.1°F	73.5°F	73.5°F
Jun	81.8°F	74.4°F	75.2°F	83.3°F	81.6°F	82.4°F	81.3°F	77.7°F	81.3°F	81.5°F
Jul	85.8°F	80.0°F	82.0°F	86.1°F	84.7°F	84.9°F	85.2°F	83.1°F	85.2°F	85.6°F
Aug	86.5°F	83.6°F	83.6°F	87.6°F	87.0°F	86.1°F	86.1°F	85.1°F	86.1°F	86.5°F
Sep	79.8°F	77.5°F	78.2°F	78.6°F	79.5°F	78.0°F	79.5°F	77.1°F	79.5°F	79.8°F
Oct	67.8°F	69.2°F	66.9°F	68.3°F	68.7°F	66.2°F	67.8°F	68.1°F	67.8°F	67.8°F
Nov	54.1°F	60.0°F	54.3°F	57.5°F	57.5°F	54.6°F	54.8°F	58.6°F	54.8°F	54.1°F
Dec	37.7°F	47.3°F	39.3°F	42.8°F	43.1°F	39.5°F	38.6°F	44.7°F	38.6°F	37.7°F
Average	65.9°F	63.3°F	63.4°F	65.4°F	63.4°F	63.4°F	60.9°F	64.6°F	63.9°F	64.2°F

Minimum Temperatures

Period	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	24.5°F	35.0°F	26.3°F	27.0°F	27.0°F	25.0°F	25.7°F	30.1°F	25.7°F	24.7°F
Feb	27.7°F	37.2°F	29.3°F	29.3°F	29.3°F	27.4°F	28.4°F	32.1°F	28.4°F	27.7°F
Mar	38.1°F	45.1°F	39.5°F	38.1°F	36.6°F	35.7°F	38.3°F	40.6°F	38.3°F	38.3°F
Apr	47.8°F	51.9°F	49.1°F	46.4°F	45.5°F	44.6°F	47.8°F	48.3°F	47.8°F	47.8°F
May	56.3°F	58.4°F	57.5°F	54.6°F	53.4°F	52.3°F	56.3°F	55.7°F	56.3°F	56.4°F
Jun	65.8°F	66.0°F	66.5°F	63.5°F	62.6°F	61.1°F	65.4°F	63.8°F	65.4°F	65.8°F
Jul	73.5°F	73.0°F	74.1°F	71.4°F	70.3°F	69.0°F	73.2°F	71.9°F	73.2°F	73.5°F
Aug	74.4°F	76.6°F	75.9°F	72.6°F	71.2°F	69.9°F	74.1°F	74.3°F	74.1°F	74.6°F
Sep	66.3°F	70.1°F	68.9°F	64.0°F	62.9°F	61.5°F	66.3°F	66.9°F	66.3°F	66.5°F
Oct	54.1°F	59.9°F	56.4°F	51.9°F	50.7°F	49.4°F	54.5°F	55.7°F	54.5°F	54.3°F
Nov	41.0°F	49.8°F	43.7°F	41.1°F	40.4°F	39.3°F	41.9°F	44.6°F	41.9°F	41.1°F
Dec	27.0°F	37.5°F	29.5°F	29.2°F	29.5°F	27.4°F	28.1°F	32.1°F	28.1°F	27.2°F
Average	49.1°F	49.8°F	49.7°F	48.3°F	50.0°F	50.0°F	51.4°F	51.3°F	46.9°F	55.0°F

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

Conditions

Sunny Weather

Period	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	5.6 hours/day	6.3 hours/day	5.2 hours/day	6.0 hours/day	4.1 hours/day	4.3 hours/day	5.1 hours/day	6.5 hours/day	5.1 hours/day	5.6 hours/day
Feb	6.3 hours/day	5.9 hours/day	6.3 hours/day	5.7 hours/day	4.9 hours/day	5.3 hours/day	5.9 hours/day	6.1 hours/day	5.9 hours/day	6.3 hours/day
Mar	6.8 hours/day	6.2 hours/day	6.9 hours/day	6.2 hours/day	6.4 hours/day	6.4 hours/day	6.6 hours/day	5.9 hours/day	6.6 hours/day	6.8 hours/day
Apr	7.7 hours/day	7.4 hours/day	7.9 hours/day	7.4 hours/day	7.3 hours/day	7.6 hours/day	7.5 hours/day	7.4 hours/day	7.5 hours/day	7.8 hours/day
May	8.5 hours/day	7.8 hours/day	8.6 hours/day	7.8 hours/day	7.3 hours/day	8.0 hours/day	8.2 hours/day	7.9 hours/day	8.2 hours/day	8.6 hours/day
Jun	7.7 hours/day	7.2 hours/day	8.3 hours/day	6.5 hours/day	6.7 hours/day	6.9 hours/day	7.8 hours/day	7.0 hours/day	7.8 hours/day	7.8 hours/day
Jul	3.9 hours/day	4.8 hours/day	5.1 hours/day	3.4 hours/day	3.5 hours/day	3.5 hours/day	4.2 hours/day	4.5 hours/day	4.2 hours/day	3.9 hours/day
Aug	4.1 hours/day	5.7 hours/day	5.2 hours/day	3.9 hours/day	4.1 hours/day	4.0 hours/day	4.6 hours/day	5.1 hours/day	4.6 hours/day	4.1 hours/day
Sep	5.8 hours/day	4.3 hours/day	6.1 hours/day	4.1 hours/day	4.6 hours/day	5.1 hours/day	5.6 hours/day	3.7 hours/day	5.6 hours/day	5.8 hours/day
Oct	6.5 hours/day	6.0 hours/day	6.6 hours/day	5.9 hours/day	6.2 hours/day	6.2 hours/day	6.2 hours/day	5.3 hours/day	6.2 hours/day	6.5 hours/day
Nov	5.6 hours/day	6.6 hours/day	5.4 hours/day	6.1 hours/day	5.7 hours/day	5.3 hours/day	5.2 hours/day	6.3 hours/day	5.2 hours/day	5.6 hours/day
Dec	5.4 hours/day	6.6 hours/day	5.0 hours/day	5.9 hours/day	3.8 hours/day	4.2 hours/day	4.6 hours/day	6.6 hours/day	4.6 hours/day	5.4 hours/day
Average	5.7 hours/day	6.2 hours/day	6.2 hours/day	5.4 hours/day	6.0 hours/day	6.0 hours/day	6.4 hours/day	6.0 hours/day	5.6 hours/day	6.2 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	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	0.0in	0.1in	0.0in	0.0in	0.0in	0.0in	0.0in	0.1in	0.0in	0.0in
Feb	0.0in	0.1in	0.0in	0.1in	0.0in	0.1in	0.0in	0.1in	0.0in	0.0in
Mar	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in
Apr	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.2in	0.1in	0.1in
May	0.2in	0.1in	0.2in	0.1in	0.1in	0.1in	0.2in	0.1in	0.2in	0.2in
Jun	0.2in	0.3in	0.2in	0.2in	0.2in	0.1in	0.2in	0.3in	0.2in	0.2in
Jul	0.4in	0.3in	0.4in	0.3in	0.4in	0.4in	0.4in	0.3in	0.4in	0.4in
Aug	0.4in	0.3in	0.4in	0.3in	0.3in	0.4in	0.4in	0.3in	0.4in	0.4in
Sep	0.2in	0.3in	0.2in	0.3in	0.2in	0.3in	0.2in	0.3in	0.2in	0.2in
Oct	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in
Nov	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in	0.1in
Dec	0.0in	0.0in	0.0in	0.0in	0.0in	0.0in	0.0in	0.0in	0.0in	0.0in
Average	0.1in	0.2in	0.2in	0.1in	0.2in	0.2in	0.2in	0.2in	0.1in	0.2in

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

Wind Speed

Period	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	8.1mph	13.7mph	13.1mph	8.1mph	9.5mph	8.6mph	8.7mph	11.1mph	8.7mph	8.3mph
Feb	9.3mph	14.2mph	13.5mph	8.6mph	10.3mph	9.4mph	9.6mph	11.4mph	9.6mph	9.5mph
Mar	10.2mph	14.7mph	13.4mph	8.5mph	10.3mph	10.0mph	10.4mph	12.1mph	10.5mph	10.3mph
Apr	11.0mph	14.0mph	13.2mph	8.9mph	10.5mph	10.3mph	11.0mph	12.0mph	11.0mph	11.0mph
May	10.8mph	13.2mph	12.8mph	8.4mph	10.1mph	9.8mph	10.7mph	11.1mph	10.7mph	10.9mph
Jun	9.6mph	12.1mph	11.6mph	7.0mph	8.7mph	8.1mph	9.7mph	9.9mph	9.7mph	9.7mph
Jul	9.0mph	12.1mph	11.3mph	6.7mph	8.4mph	7.6mph	8.9mph	10.2mph	8.9mph	9.1mph
Aug	8.6mph	13.1mph	11.3mph	6.6mph	7.9mph	7.5mph	8.6mph	10.6mph	8.6mph	8.7mph
Sep	8.2mph	14.4mph	11.4mph	6.6mph	7.2mph	7.9mph	8.4mph	11.5mph	8.4mph	8.3mph
Oct	8.3mph	13.7mph	12.1mph	6.7mph	7.6mph	7.8mph	8.5mph	10.8mph	8.5mph	8.5mph
Nov	8.9mph	13.2mph	13.8mph	7.2mph	9.2mph	7.9mph	9.3mph	10.2mph	9.3mph	9.2mph
Dec	8.7mph	13.8mph	14.1mph	8.2mph	9.5mph	8.2mph	9.2mph	10.9mph	9.2mph	8.9mph
Average	7.6mph	9.4mph	9.2mph	9.1mph	9.4mph	9.4mph	12.6mph	11.0mph	8.6mph	13.5mph

Humidity

Period	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	49.7%	54.1%	56.8%	58.1%	68.3%	65.9%	51.9%	55.4%	51.9%	49.8%
Feb	49.4%	55.1%	57.5%	57.1%	64.3%	62.3%	51.4%	56.6%	51.4%	49.5%
Mar	48.0%	61.2%	59.8%	59.1%	62.1%	60.5%	50.4%	61.2%	50.5%	48.3%
Apr	47.3%	65.1%	62.5%	58.8%	61.4%	59.9%	50.2%	63.3%	50.2%	47.6%
May	54.1%	71.4%	68.7%	63.7%	66.6%	66.2%	57.1%	68.4%	57.1%	54.5%
Jun	59.7%	79.0%	74.0%	70.5%	71.9%	72.2%	63.0%	76.9%	63.0%	60.2%
Jul	70.3%	85.6%	80.9%	80.3%	83.0%	82.5%	74.7%	83.7%	74.7%	70.5%
Aug	67.6%	80.2%	76.1%	78.2%	81.3%	81.1%	72.8%	80.6%	72.8%	67.7%
Sep	60.0%	75.5%	65.9%	78.0%	78.7%	78.2%	65.2%	78.9%	65.2%	59.9%
Oct	50.9%	63.9%	56.5%	68.5%	69.8%	70.2%	54.1%	68.0%	54.1%	51.0%
Nov	48.7%	57.7%	55.3%	62.7%	65.1%	66.1%	50.8%	60.8%	50.8%	48.9%
Dec	51.5%	54.9%	58.1%	59.6%	68.9%	68.2%	54.3%	56.0%	54.3%	51.5%
Average	66.2%	55.0%	54.8%	70.1%	58.0%	58.0%	64.3%	67.5%	69.4%	67.0%

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Astronomy

In the summer months, cities like Ulsan and Daegu experience the earliest sunrises around 05:07 and 05:09 respectively, while the latest sunrises occur in January, with Incheon reaching as late as 07:45. The longest days also occur in June, with Goyang having the longest day length at 14 hours and 42 minutes, slightly more than other cities.
Interestingly, Seoul and Incheon have some of the latest sunsets in June at 19:54 and 19:55, while the shortest day lengths in December tend to be around 09 hours and 37 minutes for cities like Goyang and Seoul. Overall, there is a consistent pattern of longer days and earlier sunrises during the summer months, while winter brings shorter days and later sunrises across these South Korean cities.

Sunrise Time

Period	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	7:44	7:31	7:46	7:34	7:40	7:40	7:44	7:31	7:43	7:44
Feb	7:22	7:10	7:23	7:13	7:19	7:19	7:22	7:10	7:21	7:22
Mar	6:42	6:33	6:43	6:35	6:42	6:40	6:41	6:32	6:41	6:42
Apr	5:58	5:52	5:59	5:53	6:01	5:57	5:58	5:50	5:57	5:58
May	5:23	5:20	5:25	5:21	5:29	5:25	5:24	5:19	5:23	5:23
Jun	5:11	5:10	5:13	5:10	5:19	5:13	5:12	5:08	5:11	5:11
Jul	5:24	5:22	5:26	5:22	5:31	5:26	5:25	5:20	5:24	5:24
Aug	5:49	5:44	5:50	5:45	5:53	5:49	5:49	5:43	5:49	5:49
Sep	6:14	6:07	6:16	6:08	6:16	6:13	6:14	6:05	6:13	6:14
Oct	6:41	6:31	6:42	6:33	6:40	6:38	6:41	6:30	6:40	6:41
Nov	7:12	6:59	7:13	7:02	7:08	7:08	7:11	6:59	7:10	7:12
Dec	7:40	7:25	7:40	7:28	7:34	7:34	7:38	7:25	7:38	7:40
Average	6:18	6:24	6:24	6:30	6:24	6:24	6:30	6:18	6:24	6:18

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

Sunset Time

Period	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	17:38	17:36	17:40	17:36	17:45	17:40	17:40	17:34	17:38	17:38
Feb	18:10	18:05	18:12	18:06	18:14	18:10	18:10	18:04	18:10	18:10
Mar	18:40	18:32	18:41	18:34	18:41	18:38	18:40	18:31	18:39	18:40
Apr	19:08	18:56	19:09	18:59	19:05	19:05	19:07	18:56	19:07	19:08
May	19:35	19:22	19:37	19:25	19:30	19:31	19:34	19:21	19:34	19:35
Jun	19:54	19:39	19:55	19:43	19:48	19:49	19:53	19:40	19:53	19:54
Jul	19:52	19:37	19:53	19:41	19:46	19:47	19:51	19:37	19:50	19:52
Aug	19:23	19:11	19:25	19:14	19:20	19:20	19:23	19:10	19:22	19:23
Sep	18:40	18:30	18:41	18:32	18:39	18:37	18:39	18:29	18:38	18:40
Oct	17:55	17:49	17:56	17:50	17:57	17:54	17:55	17:47	17:54	17:55
Nov	17:22	17:19	17:24	17:20	17:28	17:23	17:23	17:17	17:22	17:22
Dec	17:17	17:14	17:18	17:15	17:24	17:18	17:17	17:13	17:17	17:17
Average	18:30	18:36	18:36	18:36	18:36	18:36	18:42	18:30	18:36	18:30

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

Day Length

Period	Seoul	Busan	Incheon	Daegu	Gwangju	Daejeon	Suwon	Ulsan	Tongjin	Goyang
Jan	9:54 hours	10:05 hours	9:55 hours	10:02 hours	10:05 hours	10:00 hours	9:55 hours	10:04 hours	9:55 hours	9:54 hours
Feb	10:47 hours	10:55 hours	10:48 hours	10:53 hours	10:54 hours	10:52 hours	10:49 hours	10:53 hours	10:49 hours	10:47 hours
Mar	11:58 hours	11:58 hours	11:58 hours	11:58 hours	11:58 hours	11:58 hours	11:58 hours	11:58 hours	11:58 hours	11:58 hours
Apr	13:10 hours	13:05 hours	13:10 hours	13:06 hours	13:05 hours	13:07 hours	13:10 hours	13:05 hours	13:10 hours	13:10 hours
May	14:11 hours	14:01 hours	14:11 hours	14:04 hours	14:01 hours	14:06 hours	14:10 hours	14:02 hours	14:10 hours	14:11 hours
Jun	14:43 hours	14:29 hours	14:42 hours	14:33 hours	14:29 hours	14:35 hours	14:41 hours	14:31 hours	14:41 hours	14:43 hours
Jul	14:28 hours	14:15 hours	14:27 hours	14:19 hours	14:15 hours	14:21 hours	14:26 hours	14:17 hours	14:26 hours	14:28 hours
Aug	13:34 hours	13:26 hours	13:34 hours	13:29 hours	13:26 hours	13:30 hours	13:33 hours	13:28 hours	13:33 hours	13:34 hours
Sep	12:25 hours	12:23 hours	12:25 hours	12:24 hours	12:23 hours	12:25 hours	12:25 hours	12:23 hours	12:25 hours	12:25 hours
Oct	11:13 hours	11:18 hours	11:13 hours	11:16 hours	11:17 hours	11:16 hours	11:14 hours	11:17 hours	11:14 hours	11:13 hours
Nov	10:10 hours	10:20 hours	10:11 hours	10:17 hours	10:20 hours	10:15 hours	10:11 hours	10:19 hours	10:11 hours	10:10 hours
Dec	9:37 hours	9:50 hours	9:37 hours	9:46 hours	9:50 hours	9:44 hours	9:38 hours	9:48 hours	9:39 hours	9:37 hours
Average	12:12 hours	12:12 hours	12:12 hours	12:12 hours	12:12 hours	12:12 hours	12:12 hours	12:12 hours	12:12 hours	12:12 hours