14 places · sun position · panel angle
Solar data for Latvia
Across the 14 places in Latvia the best fixed tilt for solar panels runs from 41° in Liepāja to 44° in Valmiera, and flat ground gets 2.8 to 2.9 peak sun hours a day. Every number is computed for each place.
Solar power in Latvia at a glance
Averages over 14 places with climate data, for a fixed array facing south.
- 2.78–2.81
- 2.81–2.85
- 2.85–2.88
- 2.88–2.91
- 2.91–2.95
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest place in Latvia is Ventspils (Ventspils) with 2.95 peak sun hours a day on flat ground; the least sunny is Valmiera with 2.78. A 1 kWp array at its best angle makes from 1,060 kWh a year in Jēkabpils to 1,109 kWh in Ventspils — 1,073 kWh on average.
The best year-round tilt runs from 41° in Liepāja to 44° in Valmiera. Off-grid systems are sized for the darkest month and do better steeper, at 80° on average: at 70° that month brings 0.50 kWh per kWp a day in Ventspils and 0.78 kWh in Daugavpils.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Latvia
Ranked by peak sun hours on flat ground: the yearly average of a day's sunshine energy (NASA POWER climatology). Output: 1 kWp at its best year-round angle.
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 1 | Ventspils | Ventspils | 2.95 | 1,109 | 41° |
| 2 | Liepāja | Liepaja | 2.92 | 1,090 | 41° |
| 3 | Tukums | Tukums Municipality | 2.85 | 1,080 | 42° |
| 3 | Daugavpils | Daugavpils | 2.85 | 1,073 | 42° |
| 5 | Jelgava | Jelgava | 2.83 | 1,075 | 42° |
| 5 | Jūrmala | Jūrmala | 2.83 | 1,075 | 42° |
| 7 | Mārupe | Mārupe | 2.82 | 1,069 | 42° |
| 7 | Riga | Riga | 2.82 | 1,068 | 42° |
| 9 | Rēzekne | Rēzekne | 2.81 | 1,062 | 42° |
| 9 | Jēkabpils | Jēkabpils Municipality | 2.81 | 1,060 | 42° |
Solar by region in Latvia
Averages of the places in each region, sunniest first. Darkest month: what 1 kWp of off-grid panels at 70° makes a day in the worst month of the year.
| Region | Places | Sun hours/day | kWh per kWp a year | Best tilt | Darkest month at 70° | Sunniest place |
|---|---|---|---|---|---|---|
| Ventspils | 1 | 2.95 | 1,109 | 41° | 0.50 kWh | Ventspils |
| Liepaja | 1 | 2.92 | 1,090 | 41° | 0.56 kWh | Liepāja |
| Daugavpils | 1 | 2.85 | 1,073 | 42° | 0.78 kWh | Daugavpils |
| Tukums Municipality | 1 | 2.85 | 1,080 | 42° | 0.67 kWh | Tukums |
| Jelgava | 1 | 2.83 | 1,075 | 42° | 0.73 kWh | Jelgava |
| Jūrmala | 1 | 2.83 | 1,075 | 42° | 0.67 kWh | Jūrmala |
| Mārupe | 1 | 2.82 | 1,069 | 42° | 0.68 kWh | Mārupe |
| Riga | 1 | 2.82 | 1,068 | 42° | 0.68 kWh | Riga |
| Rēzekne | 1 | 2.81 | 1,062 | 42° | 0.72 kWh | Rēzekne |
| Jēkabpils Municipality | 1 | 2.81 | 1,060 | 42° | 0.72 kWh | Jēkabpils |
| Salaspils Municipality | 1 | 2.80 | 1,064 | 42° | 0.70 kWh | Salaspils |
| Ogre | 1 | 2.80 | 1,061 | 42° | 0.71 kWh | Ogre |
| Cēsis Municipality | 1 | 2.79 | 1,065 | 43° | 0.68 kWh | Cēsis |
| Valmiera | 1 | 2.78 | 1,068 | 44° | 0.67 kWh | Valmiera |
Largest places in Latvia at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Riga | 56.9° N | 42° | 79° | 2.82 |
| Daugavpils | 55.9° N | 42° | 81° | 2.85 |
| Liepāja | 56.5° N | 41° | 75° | 2.92 |
| Jelgava | 56.7° N | 42° | 79° | 2.83 |
| Jūrmala | 57.0° N | 42° | 79° | 2.83 |
| Ventspils | 57.4° N | 41° | 75° | 2.95 |
| Rēzekne | 56.5° N | 42° | 81° | 2.81 |
| Valmiera | 57.5° N | 44° | 82° | 2.78 |
| Ogre | 56.8° N | 42° | 81° | 2.80 |
| Jēkabpils | 56.5° N | 42° | 81° | 2.81 |
| Mārupe | 56.9° N | 42° | 79° | 2.82 |
| Salaspils | 56.9° N | 42° | 81° | 2.80 |
| Tukums | 57.0° N | 42° | 79° | 2.85 |
| Cēsis | 57.3° N | 43° | 82° | 2.79 |
Daylight and clock time in Latvia
In Valmiera (57.5° N), the northernmost place, the longest day of the year lasts 18 h 03 min and the shortest 6 h 35 min; in Daugavpils (55.9° N), the southernmost, 17 h 36 min and 6 h 58 min. The clocks change twice a year: forward on Sun 29 Mar, back on Sun 25 Oct (Europe/Riga).
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Europe/Riga | 14 | UTC+2, in summer UTC+3 | Forward on Sun 29 Mar, back on Sun 25 Oct |