Imperia Weather by Month

Imperia sits on the western Italian Riviera in Liguria, where the Maritime Alps drop down to the Mediterranean Sea. The city is split by the River Impero into two districts, Porto Maurizio to the west and Oneglia to the east, both fronting the same sheltered stretch of coast. Imperia has a Mediterranean climate (Koppen Csa) with mild, relatively dry winters and warm summers that stay comfortable thanks to steady sea breezes. The city receives about 796 mm (31.5 inches) of rain annually across roughly 60 rainy days, with a pronounced autumn spike in October and November. This page gives you the exact monthly numbers to plan around. Pair it with our best time to visit Imperia guide and the full Imperia travel guide.

Imperia Weather by Month: Temperature and Rainfall

The table below shows typical daytime highs, nighttime lows, rainfall, rainy days, sea temperature, and sunshine hours for each month, based on 1981-2010 climate normals. July and August are the warmest and driest; November is the wettest. Use it with our things to do in Imperia list to line up open-air plans around the forecast.

Month	High (°C/°F)	Low (°C/°F)	Rain (mm)	Rain Days	Sea (°C/°F)	Sun Hrs
January	13 / 55	7 / 45	83	6	13 / 55	4
February	13 / 55	7 / 45	91	5	13 / 55	5
March	15 / 59	9 / 48	85	6	13 / 55	6
April	17 / 63	11 / 52	63	5	14 / 57	7
May	21 / 69	15 / 59	50	6	18 / 64	8
June	24 / 75	18 / 64	32	4	21 / 70	10
July	27 / 80	21 / 70	14	2	24 / 75	11
August	27 / 81	21 / 70	31	3	25 / 77	10
September	24 / 75	18 / 64	54	4	23 / 73	8
October	21 / 69	15 / 59	86	6	20 / 68	6
November	16 / 61	11 / 52	119	8	17 / 63	4
December	14 / 57	9 / 48	88	5	15 / 59	4

Imperia Weather by Month: Spring (March to May)

March begins cool with daytime highs of 15°C (59°F) and nights at 9°C (48°F), with about 6 hours of daily sun and 85 mm of rain across 6 days. April climbs to 17°C (63°F) by day and 11°C (52°F) at night, and it is the driest spring month at 63 mm over 5 days. May is the turning point: highs reach 21°C (69°F), rain drops to 50 mm, and the sea warms to 18°C (64°F). Flower greenhouses on the hillsides hit peak production in spring, which is why Imperia anchors the Riviera dei Fiori (Coast of Flowers). See our Imperia neighborhoods guide to pick a spring base.

Imperia Weather by Month: Summer (June to August)

Summer is warm but rarely oppressive. June brings 24°C (75°F) highs, 18°C (64°F) lows, and only 32 mm of rain across 4 days. July is the driest month with just 14 mm over 2 days, and it hits 27°C (80°F) by day and 21°C (70°F) at night. August is the warmest at 27°C (81°F) with 31 mm of rain. The sea peaks at 24-25°C (75-77°F) in July and August, ideal for swimming at Spiaggia d’Oro. Humidity stays moderate thanks to the sea breeze, unlike inland Po Valley cities. See our Imperia events calendar for summer happenings.

Imperia Weather by Month: Autumn (September to November)

September is still beach weather with 24°C (75°F) highs, 18°C (64°F) lows, and a warm 23°C (73°F) sea, though rain climbs to 54 mm. October brings the real shift: highs drop to 21°C (69°F), lows to 15°C (59°F), and rainfall rises to 86 mm across 6 days. November is the wettest month of the year with 119 mm over 8 days, highs of 16°C (61°F), and the annual Olioliva olive oil fair in Oneglia. Carry an umbrella in November but expect clear, mild days in between the fronts. Check our Imperia travel tips for what to pack.

Imperia Weather by Month: Winter (December to February)

Winters are mild by European standards. Daytime highs hold around 13-14°C (55-57°F) from December through February, while nights settle at 7-9°C (45-48°F). Freezing temperatures are rare at sea level, and snow is essentially unheard of. Rainfall is steady but not extreme: 88 mm in December, 83 mm in January, and 91 mm in February, each spread over 5-6 days. You will get 4-5 hours of daily sun. The sea cools to 13-15°C (55-59°F), too cold for swimming but fine for coastal walks. Hotels drop their rates, and the where to stay in Imperia guide lists winter-friendly options.