Guelma climate
Guelma (Algeria) has a hot-summer Mediterranean climate (Köppen Csa). The average temperature over the year is 18 °C64 °F, and about 847 mm33 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Guelma climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1457 | 439 | 948 | 1134.4 | 2 |
| Feb | 1558 | 439 | 949 | 913.6 | 2 |
| Mar | 1865 | 643 | 1254 | 903.5 | 0 |
| Apr | 2271 | 948 | 1559 | 813.2 | 0 |
| May | 2678 | 1254 | 1966 | 572.3 | 0 |
| Jun | 3289 | 1762 | 2475 | 190.8 | 0 |
| Jul | 3697 | 2068 | 2882 | 100.4 | 0 |
| Aug | 3596 | 2068 | 2882 | 331.3 | 0 |
| Sep | 3086 | 1763 | 2374 | 642.5 | 0 |
| Oct | 2679 | 1456 | 2068 | 763.0 | 0 |
| Nov | 1966 | 947 | 1457 | 1034.1 | 0 |
| Dec | 1559 | 542 | 1050 | 1094.3 | 1 |
| Year | 3697 | 439 | 1864 | 84733 | 4 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 80% | 65% | 2.4 | 9:56 |
| Feb | 78% | 62% | 3.2 | 10:48 |
| Mar | 74% | 60% | 4.3 | 11:52 |
| Apr | 72% | 59% | 5.4 | 13:05 |
| May | 68% | 50% | 6.4 | 14:06 |
| Jun | 57% | 32% | 7.5 | 14:38 |
| Jul | 49% | 25% | 7.5 | 14:25 |
| Aug | 51% | 28% | 6.6 | 13:32 |
| Sep | 65% | 47% | 5.0 | 12:21 |
| Oct | 67% | 48% | 3.8 | 11:11 |
| Nov | 75% | 57% | 2.6 | 10:10 |
| Dec | 80% | 62% | 2.1 | 9:41 |
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 Guelma is like
The warmest month is July, with an average high of 36 °C97 °F and a low of 20 °C68 °F. The coldest is January, when highs average 14 °C57 °F and lows 4 °C39 °F. Seasons are strongly marked: the warmest month is on average 19 °C34.3 °F warmer than the coldest.
Annual precipitation is moderate at about 847 mm33 in. The wettest three-month stretch is November–January, which brings 38% of the annual total. Months with less than 20 mm0.8 in on average: June and July. The wettest month is January (113 mm4.4 in), the driest is July (10 mm0.4 in).
Relative humidity ranges from 49% in July to 80% in December. The clearest skies (lowest average cloud amount, 25%) are typical of July. Average wind speed near the ground ranges from 7 km/h (5 mph) in September to 9 km/h (6 mph) in February. Daylight lasts from about 9.7 hours in December to 14.6 hours in June.
Best time to visit Guelma
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April and May and October: average highs of 22 °C71 °F to 26 °C79 °F with 57 mm2.3 in to 81 mm3.2 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 36 °C97 °F.
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 Guelma
- Winter (December–February) — highs 1457 to 15 °C59 °F, lows 439 to 5 °C42 °F, about 104 mm4.1 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Spring (March–May) — highs 1865 to 26 °C78 °F, lows 643 to 12 °C54 °F, about 76 mm3.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3289 to 36 °C97 °F, lows 1762 to 20 °C68 °F, about 21 mm0.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1966 to 30 °C86 °F, lows 947 to 17 °C63 °F, about 81 mm3.2 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.
How Guelma compares
Compared with Souk Ahras, about 51 km to the east, Guelma is on average 2.8 °C5.1 °F warmer and receives a similar amount of precipitation. The difference is largest in July (3.3 °C6 °F warmer).
Of the 37 places in Algeria covered by World Climates, Guelma is the 22nd warmest by annual mean temperature and the 2nd wettest by annual precipitation. See all of them on the Algeria climate page.
Places in other countries with the most similar temperature and rainfall pattern: Naples (Italy, Csa), Rome (Italy, Csa) and Salerno (Italy, Csa).
Nearby places
- Souk Ahras 51 km · 15 °C59 °F · 869 mm34 in
- Annaba 57 km · 19 °C67 °F · 664 mm26 in
- Skikda 65 km · 19 °C67 °F · 617 mm24 in
- Constantine 73 km · 16 °C61 °F · 730 mm29 in
- Aïn Beïda 74 km · 14 °C57 °F · 699 mm28 in
- Khenchela 117 km · 14 °C58 °F · 467 mm18 in
- Tébessa 133 km · 15 °C60 °F · 541 mm21 in
- Batna 151 km · 15 °C59 °F · 441 mm17 in
Frequently asked questions
What is the warmest month in Guelma?
July is the warmest month in Guelma, with an average high of 36 °C (97 °F) and an average low of 20 °C (68 °F).
What is the coldest month in Guelma?
January is the coldest month, with an average high of 14 °C (57 °F) and an average low of 4 °C (39 °F).
When does it rain the most in Guelma?
January is the wettest month with about 113 mm (4.4 in) of precipitation; July is the driest with about 10 mm (0.4 in).
What is the best time to visit Guelma?
Judging by long-term averages, the most comfortable months are April and May and October.
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 427 m, while Guelma lies at about 305 m. Temperatures on this page were therefore adjusted by +0.8 °C1.4 °F using the standard lapse rate of 6.5 °C per 1,000 m.