1 places · sun position · panel angle
Solar data for Tonga
Pick a place for today's sun position, a sun path diagram, the best fixed tilt for solar panels and the monthly output of an off-grid array at 70°.
Largest places in Tonga at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Nuku‘alofa | 21.1° S | 18° | 45° | 5.16 |
Daylight and clock time in Tonga
In Nuku‘alofa the longest day of the year lasts 13 h 25 min and the shortest 10 h 51 min. Tonga does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Pacific/Tongatapu | 1 | UTC+13 | no daylight saving time |
Questions about solar in Tonga
Does Tonga use daylight saving time?
Tonga does not use daylight saving time: the clocks stay the same all year.
How long is the longest day in Tonga?
13 h 25 min in Nuku‘alofa; the shortest day lasts 10 h 51 min in Nuku‘alofa.