Weather Comparison
Side-by-side weather comparison for December
| Metric | Riga | Helsinki | Better |
|---|---|---|---|
| Average HighHigher is warmer | -3°C (27°F) | 0°C (32°F)▲ | Helsinki |
| Average LowHigher is milder | -15°C (5°F) | -3°C (27°F)▲ | Helsinki |
| Rain DaysFewer is drier | 3 days▲ | 12 days | Riga |
| PrecipitationLess is drier | 30 mm▲ | 57 mm | Riga |
| Sunshine HoursMore is sunnier | 1h/day | 1h/day | Tie |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 1 | 1 | Tie |
| Wind SpeedCalmer is better | 15 km/h▲ | 22 km/h | Riga |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Riga edges ahead as the better destination in December. Riga offers 1 hours of daily sunshine with only 3 rain days, while Helsinki sees 1 sunshine hours and 12 rain days.
Riga is on the cooler side at -3°C, requiring warmer clothing. Helsinki is cooler at 0°C.
For travelers who prioritize dry weather, Riga is the stronger choice in December.
Riga reaches an average high of -3°C (27°F) and drops to -15°C (5°F) at night during December. The daily temperature range is 12°C, meaning significant temperature swings between day and night.
Helsinki averages 0°C (32°F) for the high and -3°C (27°F) for the low, with a daily range of 3°C. The 3°C difference is noticeable but not dramatic.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in December.
Riga receives approximately 30 mm of rainfall across 3 rain days during December. Rain is occasional, so a light rain jacket should suffice.
Helsinki sees 57 mm over 12 rain days. That makes Riga the drier option by 9 rain days and 27 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of -3°C, lows of -15°C, 3 rain days
Highs of 0°C, lows of -3°C, 12 rain days
Pack for both: heavy winter coat, thermal base layers, warm gloves and hat, insulated boots, a warm scarf. These items are useful in either destination during December.
The table below shows average high temperatures and rain days for every month. December is highlighted for quick reference.
| Month | Riga | Helsinki | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | -2°C | 3d | -2°C | 11d |
| Feb | 3°C | 3d | -3°C | 9d |
| Mar | 10°C | 4d | 1°C | 9d |
| Apr | 17°C | 5d | 7°C | 9d |
| May | 22°C | 6d | 13°C | 9d |
| Jun | 23°C | 6d | 17°C | 12d |
| Jul | 22°C | 6d | 21°C | 12d |
| Aug | 17°C | 5d | 20°C | 12d |
| Sep | 10°C | 4d | 15°C | 10d |
| Oct | 3°C | 3d | 8°C | 12d |
| Nov | -2°C | 3d | 3°C | 12d |
| Dec | -3°C | 3d | 0°C | 12d |
Riga Weather in December
Full forecast, packing tips, and activities
Helsinki Weather in December
Full forecast, packing tips, and activities