Riga records about 641mm of rain across roughly 112 wet days a year, which is a 31% chance on an average day. July is the wettest month at 73mm (11% of the annual total) and February the driest at 28mm. Local rain type: steady rain. Riga gets moderate Baltic precipitation. Summer rain tends to arrive as afternoon showers, while autumn brings persistent grey drizzle.
Chance of rain on an average day: 31%
Rainfall climatology for Riga. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 641mm |
| Rain days per year | 112 |
| Odds on an average day | 31% |
| Wettest month | July — 73mm over 13 days |
| Driest month | February — 28mm over 5 days |
| Rain type | steady rain |
| Best dry window | May and early June offer the best dry weather for exploring the Old Town. |
| Worst rain window | October through December brings persistent grey drizzle with very short days. |
July delivers 161% more rain than February (73mm vs 28mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 11% of the annual total, so rain in Riga is spread through the year — there is no season you can rely on being dry.
Riga rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 13 days in July against 5 in February — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 38mm | 7 | 23% | -1°C |
| February | 28mm | 5 | 17% | -1°C |
| March | 33mm | 6 | 20% | 3°C |
| April | 34mm | 6 | 20% | 8°C |
| May | 47mm | 9 | 30% | 14°C |
| June | 65mm | 12 | 40% | 19°C |
| July | 73mm | 13 | 43% | 23°C |
| August | 72mm | 13 | 43% | 23°C |
| September | 64mm | 12 | 40% | 19°C |
| October | 56mm | 10 | 33% | 14°C |
| November | 56mm | 10 | 33% | 8°C |
| December | 46mm | 8 | 27% | 3°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Riga we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Riga records rain on roughly 112 days a year — about a 31% chance on any given day — totalling around 641mm.
July, with about 73mm over 13 rain days. That is 11% of the entire year's rainfall in a single month.
February is the driest month at 28mm across roughly 5 days. May and early June offer the best dry weather for exploring the Old Town.
Riga gets moderate Baltic precipitation. Summer rain tends to arrive as afternoon showers, while autumn brings persistent grey drizzle.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.