Bad Honnef weather in August

In August, Bad Honnef sees average daytime highs of 23°C and overnight lows near 14°C, with 81 mm of rain across 12.3 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 21°C by the end. The sky is clear or mostly clear about 20% of the time in August, and the air most often feels dry.

Daylight stretches from about 15 h 12 min at the start of August to 13 h 24 min by month's end. Set against the rest of the year, August is Bad Honnef's 1st-clearest and 12th-windiest month. For the whole year in context, see Bad Honnef's year-round climate.

Daytime high: 23°; 2nd warmest
Overnight low: 14°; 11th coldest
Rainfall: 81 mm; 12.3 wet days
Daylight: 14 h 18 min; 5:25 AM – 7:45 PM
Cloud cover: 63%; 1st clearest
Wind: 10 km/h; 12th windiest
Solar energy: 4.46 kWh/m²
Travel score: 6.4; out of 10

← July Bad Honnef year-round climate September →Best places to visit in August

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 21°C by the end.

A typical August day in Bad Honnef reaches about 23°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 29°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	24	24	24	24	24	24	24	24	24	24	24	23	23	23	23	23	23	23	23	23	22	22	22	22	22	22	22	21	21	21	21
Avg low (°C)	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	14	14	14	14	14	14	14	13	13	13	13	13	13	13	13	12

	Avg high (°C)	Avg low (°C)
1	24	15
2	24	15
3	24	15
4	24	15
5	24	15
6	24	15
7	24	15
8	24	15
9	24	15
10	24	15
11	24	14
12	23	14
13	23	14
14	23	14
15	23	14
16	23	14
17	23	14
18	23	14
19	23	14
20	23	14
21	22	14
22	22	14
23	22	13
24	22	13
25	22	13
26	22	13
27	22	13
28	21	13
29	21	13
30	21	13
31	21	12

How August really feels in Bad Honnef

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Bad Honnef weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 2nd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	5° / 1°	77	14	2.8	8.3	0.0
Feb	6° / 1°	64	12	3.7	9.7	0.3
Mar	10° / 3°	68	13.6	1.6	11.5	2.0
Apr	14° / 6°	53	10.9	0.3	13.5	4.0
May	18° / 9°	64	11.9	0	15.2	5.5
Jun	21° / 12°	73	11.8	0	16.2	6.0
Jul	23° / 14°	77	13	0	15.8	6.4
Aug	23° / 14°	81	12.3	0	14.3	6.4
Sep	19° / 11°	68	11	0	12.4	5.7
Oct	14° / 8°	74	12.2	0	10.4	3.7
Nov	9° / 4°	76	13.5	1	8.7	1.4
Dec	5° / 2°	91	15.5	3.5	7.8	0.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 61%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	45	45	45	43	43	43	43	43	41	40	40	39	39	39	38	38	38	38	38	38	37	37	37	36	36	36	36	36	36	36	36
Cloudier (%)	55	55	55	57	57	57	57	57	59	60	60	61	61	61	62	62	62	62	62	62	63	63	63	64	64	64	64	64	64	64	64

	Clearer (%)	Cloudier (%)
1	45	55
2	45	55
3	45	55
4	43	57
5	43	57
6	43	57
7	43	57
8	43	57
9	41	59
10	40	60
11	40	60
12	39	61
13	39	61
14	39	61
15	38	62
16	38	62
17	38	62
18	38	62
19	38	62
20	38	62
21	37	63
22	37	63
23	37	63
24	36	64
25	36	64
26	36	64
27	36	64
28	36	64
29	36	64
30	36	64
31	36	64

Chance of precipitation in August

Any precipitation

Bad Honnef gets around 81 mm of rain over 12.3 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 41% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	41	41	41	41	41	41	41	41	41	41	41	41	41	41	41	41	41	40	40	40	39	39	39	38	38	38	38	38	38	38	38

	Rain chance (%)
1	41
2	41
3	41
4	41
5	41
6	41
7	41
8	41
9	41
10	41
11	41
12	41
13	41
14	41
15	41
16	41
17	41
18	40
19	40
20	40
21	39
22	39
23	39
24	38
25	38
26	38
27	38
28	38
29	38
30	38
31	38

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	38	38	38	38	39	39	39	40	40	40	41	41	42	43	43	44	45	46	47	48	50	50	53	54	56	58	59	60	61	63	64
Comfortable (%)	43	44	44	44	44	44	44	44	44	44	43	42	42	41	40	39	38	37	36	35	34	33	31	30	29	28	28	27	27	26	26
Humid (%)	18	18	17	17	17	17	16	16	16	16	16	16	16	16	16	17	17	17	17	16	16	16	15	15	14	13	12	12	11	10	9
Muggy (%)	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	38	43	18	1
2	38	44	18	0
3	38	44	17	0
4	38	44	17	0
5	39	44	17	0
6	39	44	17	0
7	39	44	16	0
8	40	44	16	0
9	40	44	16	0
10	40	44	16	0
11	41	43	16	0
12	41	42	16	0
13	42	42	16	0
14	43	41	16	0
15	43	40	16	0
16	44	39	17	0
17	45	38	17	0
18	46	37	17	0
19	47	36	17	1
20	48	35	16	1
21	50	34	16	1
22	50	33	16	1
23	53	31	15	1
24	54	30	15	1
25	56	29	14	1
26	58	28	13	1
27	59	28	12	1
28	60	27	12	1
29	61	27	11	1
30	63	26	10	1
31	64	26	9	1

Wind in August

Winds average 10 km/h in August, the calmest month.

Across August, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	9	9	9	9	9	9	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	9	calm
2	9	calm
3	9	calm
4	9	calm
5	9	calm
6	9	calm
7	9	calm
8	9	calm
9	10	calm
10	10	calm
11	10	calm
12	10	calm
13	10	calm
14	10	calm
15	10	calm
16	10	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	calm
22	10	calm
23	10	calm
24	10	calm
25	10	calm
26	10	calm
27	10	calm
28	10	calm
29	10	calm
30	10	calm
31	10	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 12 min at the start of August to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over August. Sunrise moves from 5:02 AM to 5:49 AM, and sunset from 8:12 PM to 7:13 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	15.2	15.1	15.1	15.0	15.0	14.9	14.8	14.8	14.7	14.7	14.6	14.6	14.5	14.5	14.4	14.3	14.3	14.2	14.2	14.1	14.0	14.0	13.9	13.9	13.8	13.7	13.7	13.6	13.5	13.5	13.4
Sunrise (AM)	5:02	5:04	5:05	5:07	5:08	5:10	5:11	5:13	5:14	5:16	5:17	5:19	5:20	5:22	5:24	5:25	5:27	5:28	5:30	5:31	5:33	5:35	5:36	5:38	5:39	5:41	5:42	5:44	5:46	5:47	5:49
Sunset (PM)	8:12	8:10	8:09	8:07	8:05	8:04	8:02	8:00	7:58	7:57	7:55	7:53	7:51	7:49	7:47	7:45	7:43	7:41	7:39	7:37	7:35	7:33	7:31	7:29	7:27	7:24	7:22	7:20	7:18	7:16	7:13

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	15.2	5:02	8:12
2	15.1	5:04	8:10
3	15.1	5:05	8:09
4	15.0	5:07	8:07
5	15.0	5:08	8:05
6	14.9	5:10	8:04
7	14.8	5:11	8:02
8	14.8	5:13	8:00
9	14.7	5:14	7:58
10	14.7	5:16	7:57
11	14.6	5:17	7:55
12	14.6	5:19	7:53
13	14.5	5:20	7:51
14	14.5	5:22	7:49
15	14.4	5:24	7:47
16	14.3	5:25	7:45
17	14.3	5:27	7:43
18	14.2	5:28	7:41
19	14.2	5:30	7:39
20	14.1	5:31	7:37
21	14.0	5:33	7:35
22	14.0	5:35	7:33
23	13.9	5:36	7:31
24	13.9	5:38	7:29
25	13.8	5:39	7:27
26	13.7	5:41	7:24
27	13.7	5:42	7:22
28	13.6	5:44	7:20
29	13.5	5:46	7:18
30	13.5	5:47	7:16
31	13.4	5:49	7:13

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.46 kWh/m².

For context, solar energy here swings from a low near 0.61 kWh/m² to a high of 5.32 kWh/m² in June across the year — August's 4.46 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.0	5.0	5.0	4.9	4.9	4.9	4.8	4.8	4.8	4.7	4.7	4.6	4.6	4.5	4.5	4.5	4.4	4.4	4.3	4.3	4.2	4.2	4.1	4.1	4.0	4.0	3.9	3.9	3.8	3.8	3.7
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	5.0	Bright
2	5.0	Bright
3	5.0	Bright
4	4.9	Bright
5	4.9	Bright
6	4.9	Bright
7	4.8	Bright
8	4.8	Bright
9	4.8	Bright
10	4.7	Bright
11	4.7	Bright
12	4.6	Bright
13	4.6	Bright
14	4.5	Bright
15	4.5	Bright
16	4.5	Bright
17	4.4	Bright
18	4.4	Bright
19	4.3	Bright
20	4.3	Bright
21	4.2	Bright
22	4.2	Bright
23	4.1	Bright
24	4.1	Bright
25	4.0	Bright
26	4.0	Moderate
27	3.9	Moderate
28	3.9	Moderate
29	3.8	Moderate
30	3.8	Moderate
31	3.7	Moderate

Planning a trip in August

Is August a good time to visit Bad Honnef?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.4

Sightseeing

1st-best month of the year

4.8

Beach & pool

2nd-best month of the year

August is a reasonable time to visit Bad Honnef for sightseeing.

What to pack for Bad Honnef in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Bad Honnef sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

UV index in Bad Honnef in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bad Honnef peaks around July 14 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	1	3	4	6	6	7	6	4	2	1	1
Level	Low	Low	Moderate	Moderate	High	High	High	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	1	Low
Mar	3	Moderate
Apr	4	Moderate
May	6	High
Jun	6	High
Jul	7	High
Aug	6	High
Sep	4	Moderate
Oct	2	Moderate
Nov	1	Low
Dec	1	Low

Location & terrain

Where is Bad Honnef?

Bad Honnef sits at 50.6°N, 7.2°E, 73 m above sea level, in Germany. The nearest listed city is Königswinter, 5.0 km away.

Topography around Bad Honnef

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bad Honnef.

Within 3 km, the terrain around Bad Honnef has significant variations in elevation — a maximum elevation change of 399 m around an average of 155 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 411 m; within 80 km, large variations in elevation — a maximum elevation change of 1,021 m.

The land around Bad Honnef is covered by trees (74%) within 3 km, trees (55%) and grassland (20%) within 16 km, and trees (55%) and grassland (20%) within 80 km.

3 km

399 m

trees 74%

16 km

411 m

trees 55%

80 km

1,021 m

trees 55%

treesgrasslandcroplandartificial surfaceswater

← July Bad Honnef year-round climate September →Best places to visit in August

August weather nearby: Königswinter 5.0 km · Remagen 7.0 km · Wachtberg 9.0 km · Sinzig 11 km · Bonn 14 km · Bad Neuenahr-Ahrweiler 14 km · Bonn Hardtberg 14 km · Meckenheim 14 km

Germany travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 80% of US; price level, 2025
GDP per capita: $60,496; 2025
Happiness: 6.9 / 10; World Happiness, 2025
Safe drinking water: 100%; of population, 2024
Homicide rate: 0.9; per 100k, 2023
Road deaths: 3.8; per 100k/yr, 2019
Income group: High; World Bank
English: Very high; EF EPI 615
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Bad Honnef (50.6434°, 7.2278°, elevation 73 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	24	15
2	24	15
3	24	15
4	24	15
5	24	15
6	24	15
7	24	15
8	24	15
9	24	15
10	24	15
11	24	14
12	23	14
13	23	14
14	23	14
15	23	14
16	23	14
17	23	14
18	23	14
19	23	14
20	23	14
21	22	14
22	22	14
23	22	13
24	22	13
25	22	13
26	22	13
27	22	13
28	21	13
29	21	13
30	21	13
31	21	12

	Clearer (%)	Cloudier (%)
1	45	55
2	45	55
3	45	55
4	43	57
5	43	57
6	43	57
7	43	57
8	43	57
9	41	59
10	40	60
11	40	60
12	39	61
13	39	61
14	39	61
15	38	62
16	38	62
17	38	62
18	38	62
19	38	62
20	38	62
21	37	63
22	37	63
23	37	63
24	36	64
25	36	64
26	36	64
27	36	64
28	36	64
29	36	64
30	36	64
31	36	64

	Rain chance (%)
1	41
2	41
3	41
4	41
5	41
6	41
7	41
8	41
9	41
10	41
11	41
12	41
13	41
14	41
15	41
16	41
17	41
18	40
19	40
20	40
21	39
22	39
23	39
24	38
25	38
26	38
27	38
28	38
29	38
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	38	43	18	1
2	38	44	18	0
3	38	44	17	0
4	38	44	17	0
5	39	44	17	0
6	39	44	17	0
7	39	44	16	0
8	40	44	16	0
9	40	44	16	0
10	40	44	16	0
11	41	43	16	0
12	41	42	16	0
13	42	42	16	0
14	43	41	16	0
15	43	40	16	0
16	44	39	17	0
17	45	38	17	0
18	46	37	17	0
19	47	36	17	1
20	48	35	16	1
21	50	34	16	1
22	50	33	16	1
23	53	31	15	1
24	54	30	15	1
25	56	29	14	1
26	58	28	13	1
27	59	28	12	1
28	60	27	12	1
29	61	27	11	1
30	63	26	10	1
31	64	26	9	1

	Avg high (°C)	Avg low (°C)
1	24	15
2	24	15
3	24	15
4	24	15
5	24	15
6	24	15
7	24	15
8	24	15
9	24	15
10	24	15
11	24	14
12	23	14
13	23	14
14	23	14
15	23	14
16	23	14
17	23	14
18	23	14
19	23	14
20	23	14
21	22	14
22	22	14
23	22	13
24	22	13
25	22	13
26	22	13
27	22	13
28	21	13
29	21	13
30	21	13
31	21	12

	Clearer (%)	Cloudier (%)
1	45	55
2	45	55
3	45	55
4	43	57
5	43	57
6	43	57
7	43	57
8	43	57
9	41	59
10	40	60
11	40	60
12	39	61
13	39	61
14	39	61
15	38	62
16	38	62
17	38	62
18	38	62
19	38	62
20	38	62
21	37	63
22	37	63
23	37	63
24	36	64
25	36	64
26	36	64
27	36	64
28	36	64
29	36	64
30	36	64
31	36	64

	Rain chance (%)
1	41
2	41
3	41
4	41
5	41
6	41
7	41
8	41
9	41
10	41
11	41
12	41
13	41
14	41
15	41
16	41
17	41
18	40
19	40
20	40
21	39
22	39
23	39
24	38
25	38
26	38
27	38
28	38
29	38
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	38	43	18	1
2	38	44	18	0
3	38	44	17	0
4	38	44	17	0
5	39	44	17	0
6	39	44	17	0
7	39	44	16	0
8	40	44	16	0
9	40	44	16	0
10	40	44	16	0
11	41	43	16	0
12	41	42	16	0
13	42	42	16	0
14	43	41	16	0
15	43	40	16	0
16	44	39	17	0
17	45	38	17	0
18	46	37	17	0
19	47	36	17	1
20	48	35	16	1
21	50	34	16	1
22	50	33	16	1
23	53	31	15	1
24	54	30	15	1
25	56	29	14	1
26	58	28	13	1
27	59	28	12	1
28	60	27	12	1
29	61	27	11	1
30	63	26	10	1
31	64	26	9	1

	Avg high (°C)	Avg low (°C)
1	24	15
2	24	15
3	24	15
4	24	15
5	24	15
6	24	15
7	24	15
8	24	15
9	24	15
10	24	15
11	24	14
12	23	14
13	23	14
14	23	14
15	23	14
16	23	14
17	23	14
18	23	14
19	23	14
20	23	14
21	22	14
22	22	14
23	22	13
24	22	13
25	22	13
26	22	13
27	22	13
28	21	13
29	21	13
30	21	13
31	21	12

	Clearer (%)	Cloudier (%)
1	45	55
2	45	55
3	45	55
4	43	57
5	43	57
6	43	57
7	43	57
8	43	57
9	41	59
10	40	60
11	40	60
12	39	61
13	39	61
14	39	61
15	38	62
16	38	62
17	38	62
18	38	62
19	38	62
20	38	62
21	37	63
22	37	63
23	37	63
24	36	64
25	36	64
26	36	64
27	36	64
28	36	64
29	36	64
30	36	64
31	36	64

	Rain chance (%)
1	41
2	41
3	41
4	41
5	41
6	41
7	41
8	41
9	41
10	41
11	41
12	41
13	41
14	41
15	41
16	41
17	41
18	40
19	40
20	40
21	39
22	39
23	39
24	38
25	38
26	38
27	38
28	38
29	38
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	38	43	18	1
2	38	44	18	0
3	38	44	17	0
4	38	44	17	0
5	39	44	17	0
6	39	44	17	0
7	39	44	16	0
8	40	44	16	0
9	40	44	16	0
10	40	44	16	0
11	41	43	16	0
12	41	42	16	0
13	42	42	16	0
14	43	41	16	0
15	43	40	16	0
16	44	39	17	0
17	45	38	17	0
18	46	37	17	0
19	47	36	17	1
20	48	35	16	1
21	50	34	16	1
22	50	33	16	1
23	53	31	15	1
24	54	30	15	1
25	56	29	14	1
26	58	28	13	1
27	59	28	12	1
28	60	27	12	1
29	61	27	11	1
30	63	26	10	1
31	64	26	9	1