Lahijan climate
Lahijan (Iran) has a hot-summer Mediterranean climate (Köppen Csa). The average temperature over the year is 19 °C67 °F, and about 955 mm38 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Lahijan climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1356 | 440 | 948 | 793.1 |
| Feb | 1559 | 541 | 1050 | 773.0 |
| Mar | 1967 | 947 | 1457 | 752.9 |
| Apr | 2475 | 1254 | 1864 | 612.4 |
| May | 2985 | 1763 | 2374 | 230.9 |
| Jun | 3391 | 2169 | 2780 | 261.0 |
| Jul | 3493 | 2272 | 2883 | 371.4 |
| Aug | 3494 | 2373 | 2983 | 512.0 |
| Sep | 3188 | 2069 | 2678 | 1144.5 |
| Oct | 2679 | 1762 | 2171 | 1706.7 |
| Nov | 1967 | 1051 | 1559 | 1495.9 |
| Dec | 1559 | 643 | 1051 | 943.7 |
| Year | 3494 | 440 | 1967 | 95538 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 77% | 69% | 2.0 | 9:52 |
| Feb | 76% | 73% | 2.6 | 10:46 |
| Mar | 72% | 78% | 3.4 | 11:51 |
| Apr | 71% | 81% | 4.4 | 13:06 |
| May | 67% | 70% | 5.9 | 14:09 |
| Jun | 66% | 58% | 6.7 | 14:42 |
| Jul | 70% | 63% | 6.2 | 14:29 |
| Aug | 70% | 56% | 5.7 | 13:35 |
| Sep | 74% | 61% | 4.4 | 12:22 |
| Oct | 75% | 65% | 3.1 | 11:10 |
| Nov | 77% | 69% | 2.1 | 10:07 |
| Dec | 78% | 68% | 1.8 | 9:37 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Lahijan is like
The warmest month is August, with an average high of 34 °C94 °F and a low of 23 °C73 °F. The coldest is January, when highs average 13 °C56 °F and lows 4 °C40 °F. Seasons are strongly marked: the warmest month is on average 19.7 °C35.4 °F warmer than the coldest.
Annual precipitation is moderate at about 955 mm38 in. The wettest three-month stretch is September–November, which brings 45% of the annual total. The wettest month is October (170 mm6.7 in), the driest is May (23 mm0.9 in).
Relative humidity ranges from 66% in June to 78% in December. The clearest skies (lowest average cloud amount, 56%) are typical of August. Average wind speed near the ground ranges from 5 km/h (3 mph) in May to 7 km/h (4 mph) in January. Daylight lasts from about 9.6 hours in December to 14.7 hours in June.
Best time to visit Lahijan
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March–May: average highs of 19 °C67 °F to 29 °C85 °F with 23 mm0.9 in to 75 mm2.9 in of precipitation per month.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Lahijan
- Winter (December–February) — highs 1356 to 15 °C59 °F, lows 440 to 6 °C43 °F, about 84 mm3.3 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Spring (March–May) — highs 1967 to 29 °C85 °F, lows 947 to 17 °C63 °F, about 53 mm2.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3391 to 34 °C94 °F, lows 2169 to 23 °C73 °F, about 38 mm1.5 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1967 to 31 °C88 °F, lows 1051 to 20 °C69 °F, about 144 mm5.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Lahijan compares
Compared with Rasht, about 38 km to the west, Lahijan is on average 0.9 °C1.6 °F warmer and receives 6% less precipitation (955 mm38 in vs 1,019 mm40 in). The difference is largest in April (2.8 °C5.1 °F warmer).
Of the 82 places in Iran covered by World Climates, Lahijan is the 27th warmest by annual mean temperature and the 2nd wettest by annual precipitation. See all of them on the Iran climate page.
Places in other countries with the most similar temperature and rainfall pattern: Taranto (Italy, Csa), Pátra (Greece, Csa) and Waco (United States, Cfa).
Nearby places
- Rasht 38 km · 18 °C65 °F · 1,019 mm40 in
- Qazvin 104 km · 13 °C55 °F · 614 mm24 in
- Chalus 140 km · 21 °C70 °F · 799 mm31 in
- Zanjan 147 km · 11 °C51 °F · 380 mm15 in
- Nazarabad 149 km · 16 °C60 °F · 426 mm17 in
- Karaj 176 km · 14 °C58 °F · 509 mm20 in
- Ardabil 190 km · 12 °C53 °F · 420 mm17 in
- Mianeh 204 km · 15 °C58 °F · 259 mm10 in
Frequently asked questions
What is the warmest month in Lahijan?
August is the warmest month in Lahijan, with an average high of 34 °C (94 °F) and an average low of 23 °C (73 °F).
What is the coldest month in Lahijan?
January is the coldest month, with an average high of 13 °C (56 °F) and an average low of 4 °C (40 °F).
When does it rain the most in Lahijan?
October is the wettest month with about 170 mm (6.7 in) of precipitation; May is the driest with about 23 mm (0.9 in).
What is the best time to visit Lahijan?
Judging by long-term averages, the most comfortable months are March–May.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 849 m, while Lahijan lies at about 4 m. Temperatures on this page were therefore adjusted by +5.5 °C9.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.