Loreto climate by month
What the weather is like
Loreto has a hot desert climate (Köppen BWh): very little rain and intense sun.
The warmest month is August, when afternoons average 37° and nights 28°. January is the coolest month, with highs of 24° and lows of 13°. The difference between the warmest and the coolest month is about 14°.
About 183 mm of precipitation falls in an average year. September is the wettest month (65 mm, 5 wet days) and April the driest (1 mm, 0 wet days). Cloud cover ranges from 6% in June to 26% in January.
The sea reaches about 30° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Mexico City, the capital, Loreto is 12.4° warmer on a August afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 37° · August
- Coldest nights
- 13° · January
- Wettest month
- September
- Driest month
- April
- Clearest skies
- June · 6% cloud
- Warmest sea
- 30° · August
- Longest day
- 13 h 45 min
- Shortest day
- 10 h 31 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 24° | 25° | 28° | 30° | 28° | 36° | 37° | 37° | 36° | 33° | 29° | 25° |
| Average low | 13° | 13° | 14° | 17° | 24° | 24° | 27° | 28° | 26° | 22° | 17° | 13° |
| Precipitation | 16 mm | 7 mm | 3 mm | 1 mm | 0 mm | 1 mm | 13 mm | 40 mm | 65 mm | 12 mm | 9 mm | 16 mm |
| Wet days (≥1 mm) | 0.3 | 0.8 | 1.2 | 0 | 0 | 1 | 1 | 4.7 | 5.2 | 1.5 | 0.2 | 0.8 |
| Cloud cover | 26% | 26% | 22% | 22% | 13% | 6% | 24% | 26% | 15% | 11% | 19% | 26% |
| Sea temperature | 19° | 19° | 20° | 21° | 23° | 26° | 28° | 30° | 30° | 28° | 25° | 22° |
| Daylight | 10h 41 | 11h 17 | 11h 59 | 12h 46 | 13h 25 | 13h 45 | 13h 37 | 13h 04 | 12h 19 | 11h 34 | 10h 53 | 10h 31 |
| Month score | 99 | 96 | 87 | 79 | 89 | 56 | 56 | 47 | 46 | 61 | 83 | 98 |