Riga weather in August

In August, Riga sees average daytime highs of 21°C and overnight lows near 15°C, with 79 mm of rain across 13 wet days and about 15 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 26% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 16 h 06 min at the start of August to 13 h 48 min by month's end. Set against the rest of the year, August is Riga's 4th-clearest and 9th-windiest month. For the whole year in context, see Riga's year-round climate.

Daytime high
21°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
79 mm
13 wet days
Daylight
15 hours
4:59 AM – 7:57 PM
Cloud cover
60%
4th clearest
Wind
14 km/h
9th windiest
Solar energy
4.49 kWh/m²
Travel score
6.1
out of 10

Riga is capital and largest city of Latvia.

Air quality
Moderate
PM2.5 12.1 µg/m³ · 2019
Density
2,442/km²
people per km²
Founded
1201

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 22°C in the first days to 19°C by the end.

A typical August day in Riga reaches about 21°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, August runs on par with July and about 5°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12216
22216
32216
42216
52216
62215
72215
82215
92215
102215
112215
122215
132115
142115
152115
162115
172115
182115
192114
202114
212114
222014
232014
242014
252014
262014
272014
282013
291913
301913
311913

How August really feels in Riga

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
0
heat index over the day's high
Days feeling ≤ C
0
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.

Riga 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-0° / -4°4611.27.77.20.0
Feb-0° / -4°389.87.490.0
Mar / -2°389.7511.40.0
Apr / 419.31.413.92.0
May15° / 5210.3016.14.5
Jun19° / 12°7311.3017.45.8
Jul22° / 15°7111.7016.96.4
Aug21° / 15°79130156.1
Sep16° / 11°7011.6012.54.8
Oct10° / 8014.20.6102.1
Nov / 5912.83.87.80.2
Dec / -2°4912.17.16.60.0

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 21% of August, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45248
55149
65149
75149
85149
95050
105149
115050
125050
134951
145050
155050
164951
174852
184852
194753
204654
214654
224456
234456
244456
254258
264159
274159
283961
293961
303961
313961

Chance of precipitation in August

Any precipitation

Riga gets around 79 mm of rain over 13 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 41% and peaks near 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
236
336
437
537
638
739
839
940
1040
1141
1241
1342
1442
1543
1643
1743
1844
1944
2044
2144
2244
2344
2444
2544
2644
2744
2843
2943
3043
3143

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 42% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12741257
22841256
32842246
42942235
53042235
63142225
73242214
83343204
93443204
103443193
113543183
123643183
133743173
143843163
153944153
163944143
174044132
184144122
194244112
204344112
214444102
22454492
23464491
24484381
25494271
26514261
27524161
28554050
29573940
30593740
31603640

Wind in August

Winds average 14 km/h in August.

Across August, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 06 min at the start of August to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 138 minutes over August. Sunrise moves from 4:28 AM to 5:30 AM, and sunset from 8:31 PM to 7:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.14:288:31
216.04:308:29
315.94:328:27
415.84:348:25
515.84:368:23
615.74:388:21
715.64:408:18
815.64:428:16
915.54:448:14
1015.44:468:11
1115.34:488:09
1215.34:508:07
1315.24:528:04
1415.14:548:02
1515.04:567:59
1615.04:597:57
1714.95:017:54
1814.85:037:52
1914.75:057:49
2014.75:077:47
2114.65:097:44
2214.55:117:41
2314.45:137:39
2414.35:157:36
2514.35:177:33
2614.25:207:31
2714.15:227:28
2814.05:247:25
2913.95:267:23
3013.95:287:20
3113.85:307:17

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.49 kWh/m².

For context, solar energy here swings from a low near 0.29 kWh/m² to a high of 5.91 kWh/m² in June across the year — August's 4.49 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
75.0Bright
84.9Bright
94.8Bright
104.8Bright
114.7Bright
124.7Bright
134.6Bright
144.6Bright
154.5Bright
164.5Bright
174.4Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.1Bright
234.1Bright
244.0Bright
254.0Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.7Moderate
313.6Moderate
Planning a trip in August

Is August a good time to visit Riga?

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

6.1
Sightseeing
2nd-best month of the year
3.7
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Riga for sightseeing.

What to pack for Riga in August

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

In August, Riga sees daytime highs around 21°C and nights near 15°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Riga in August

The nearest coast averages about 19°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 20 km away) is warmest in August at about 19°C and coldest in February near 1°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr3Bracing
May9Bracing
Jun14Bracing
Jul18Cool
Aug19Cool
Sep16Cool
Oct11Bracing
Nov8Bracing
Dec5Bracing

UV index in Riga in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Riga peaks around June 20 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 20UV 6Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May5Moderate
Jun6High
Jul5High
Aug5High
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low

Air quality in Riga 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 Riga is worst in June — around 17 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (November, 7 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Riga's WHO annual average of 12.1 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 917 µg/m³Nov 227 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar14Moderate
Apr16Moderate
May17Moderate
Jun17Moderate
Jul14Moderate
Aug14Moderate
Sep12Good
Oct8Good
Nov7Good
Dec7Good
Location & terrain

Where is Riga?

Riga sits at 56.9°N, 24.1°E, 6 m above sea level, in Latvia. The nearest listed city is Dārzciems, 4.0 km away.

OgreJelgavaSiguldaTukums

Topography around Riga

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

Within 3 km, the terrain around Riga has only modest variations in elevation — a maximum elevation change of 36 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 52 m; within 80 km, significant variations in elevation — a maximum elevation change of 277 m.

The land around Riga is covered by artificial surfaces (50%) and trees (25%) within 3 km, trees (47%) within 16 km, and trees (45%) and cropland (22%) within 80 km.

3 km
36 m
16 km
52 m
80 km
277 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Dārzciems 4.0 km · Mārupe 6.0 km · Salaspils 18 km · Jūrmala 20 km · Ogre 34 km · Jelgava 41 km · Sigulda 51 km · Tukums 58 km

Latvia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 57% of US
price level, 2025
GDP per capita
$26,312
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2.5
per 100k, 2023
Road deaths
8.1
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 599
Religion
Lutheran 36%unspecified/none 24%Roman Catholic 20%Orthodox 19%

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 Riga (56.946°, 24.1059°, elevation 6 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. 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).