Nagahama weather in August

In August, Nagahama sees average daytime highs of 29°C and overnight lows near 23°C, with 173 mm of rain across 15.7 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 28°C by the end. The sky is clear or mostly clear about 26% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Nagahama's 5th-clearest and 11th-windiest month. For the whole year in context, see Nagahama's year-round climate.

Daytime high
29°
1st warmest
Overnight low
23°
12th coldest
Rainfall
173 mm
15.7 wet days
Daylight
13 h 18 min
5:19 AM – 6:39 PM
Cloud cover
63%
5th clearest
Wind
8 km/h
11th windiest
Solar energy
5.12 kWh/m²
Travel score
4.7
out of 10

Nagahama is city in Shiga Prefecture, Japan.

Density
167/km²
people per km²
Founded
2006

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 30°C in the first days to 28°C by the end.

A typical August day in Nagahama reaches about 29°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, August runs about 1°C warmer than July and about 4°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
142923
152923
162923
172923
182923
192923
202923
212923
222922
232922
242922
252922
262822
272822
282822
292822
302822
312822

How August really feels in Nagahama

Once humidity and wind are folded in, August averages 18 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
18
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Nagahama weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°11318.111.59.90.1
Feb / -0°10014.99.610.70.4
Mar10° / 14415.1411.72.1
Apr16° / 152130.412.94.5
May20° / 12°18112.5013.85.9
Jun24° / 17°22815.4014.35.6
Jul28° / 22°28718.3014.14.8
Aug29° / 23°17315.7013.34.7
Sep25° / 19°22214.5012.25.9
Oct20° / 13°17112.4011.16.0
Nov14° / 11012.80.210.13.8
Dec / 11117.36.59.71.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 16% of August, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34357
44357
54357
64357
74357
84357
94456
104357
114357
124258
134357
144357
154357
164357
174357
184357
194456
204456
214357
224258
234258
244258
254258
264258
274159
284060
294060
304060
314159

Chance of precipitation in August

Any precipitation

Nagahama gets around 173 mm of rain over 15.7 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 51% and peaks near 53% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
150
250
350
450
550
650
750
850
950
1050
1151
1251
1352
1452
1552
1653
1753
1853
1953
2053
2152
2252
2352
2451
2551
2651
2751
2850
2950
3050
3150

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 66% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10122743
20121753
30121753
40121753
50121744
60121744
70120754
80120754
90220744
100220744
110221734
121221724
131221724
141221724
151222714
161323694
171324693
181325683
191426663
201427653
211528633
221629613
231631602
241732582
251833562
261834552
271936522
2821037502
2921138481
3021238471
3121339451

Wind in August

Winds average 8 km/h in August.

Across August, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over August. Sunrise moves from 5:07 AM to 5:30 AM, and sunset from 6:55 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:076:55
213.85:086:54
313.75:086:53
413.75:096:52
513.75:106:51
613.75:116:50
713.65:126:49
813.65:126:48
913.65:136:47
1013.55:146:46
1113.55:156:45
1213.55:156:44
1313.45:166:43
1413.45:176:42
1513.45:186:41
1613.35:196:39
1713.35:196:38
1813.35:206:37
1913.25:216:36
2013.25:226:34
2113.25:236:33
2213.15:236:32
2313.15:246:31
2413.15:256:29
2513.05:266:28
2613.05:276:27
2713.05:276:25
2812.95:286:24
2912.95:296:22
3012.95:306:21
3112.85:306:20

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.12 kWh/m².

For context, solar energy here swings from a low near 2.2 kWh/m² to a high of 5.39 kWh/m² in May across the year — August's 5.12 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
224.9Bright
234.9Bright
244.9Bright
254.8Bright
264.8Bright
274.8Bright
284.7Bright
294.7Bright
304.7Bright
314.6Bright
Planning a trip in August

Hazard calendar for Nagahama

In seasonPeak

In August, Nagahama sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Nagahama sits in the Pacific typhoon belt; the season peaks July–October.

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

Is August a good time to visit Nagahama?

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

4.7
Sightseeing
6th-best month of the year
6.0
Beach & pool
1st-best month of the year

August is a reasonable time to visit Nagahama for sightseeing.

What to pack for Nagahama in August

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

In August, Nagahama sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Nagahama in August

The nearest coast averages about 27°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 44 km away) is warmest in August at about 27°C and coldest in March near 11°C.

It's comfortable for a long swim from Jun 12 to Nov 7 — about 4.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar11Bracing
Apr13Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep26Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Nagahama in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nagahama peaks around July 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 13UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Nagahama in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Nagahama is worst in April — around 26 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1125 µg/m³Aug 1817 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar25Moderate
Apr26Moderate
May25Moderate
Jun21Moderate
Jul17Moderate
Aug17Moderate
Sep17Moderate
Oct18Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Nagahama?

Nagahama sits at 35.4°N, 136.3°E, 86 m above sea level, in Japan. The nearest listed city is Maibara, 8.0 km away.

Topography around Nagahama

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

Within 3 km, the terrain around Nagahama has only modest variations in elevation — a maximum elevation change of 44 m around an average of 90 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,288 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,606 m.

The land around Nagahama is covered by artificial surfaces (43%), water (29%) and cropland (25%) within 3 km, trees (40%) and water (34%) within 16 km, and trees (59%) within 80 km.

3 km
44 m
16 km
1,288 m
80 km
1,606 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Maibara 8.0 km · Hikone 15 km · Takashima 23 km · Tarui 24 km · Echigawa 25 km · Takada 29 km · Ikeno 29 km · Ibi 29 km

Japan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
100 V · 50 / 60 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$35,951
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.2
per 100k, 2023
Road deaths
3.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 446
Religion
Shintoism 49%Buddhism 46%other 4%Christianity 1%

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 Nagahama (35.3833°, 136.2667°, elevation 86 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).