When is the best time to go to Batumi: sea, rains and weather by month

Batumi promises beach and warmth. But this resort has a capricious character. The subtropics on the Black Sea coast bring hot summers and a great deal of rain. So the question of "when to go" matters more here than in the dry Mediterranean.

June and September offer the best balance of warmth and calm. Below is a month-by-month climate breakdown and a clear way to choose the right period for the beach, the city, or saving money. All averages are based on the long-term 1961-1990 normals.

When to go to Batumi

💡 In short:

• Beach season: from mid-June to mid-October, the sea stays at 22 °C or above.
• Warmest in July and August, with daytime air up to 28 °C.
• Least rain in May, most in September.
• The velvet season falls in September: the sea is still warm and there are fewer tourists.
• Winter is mild but damp: around 11 °C during the day and frequent rain.
• Climate data: 1961-1990 normals; sea temperature from travel-batumi.com (09/2026).

There is no perfect "dry" month in Batumi. The choice comes down to balancing warmth, rain, and tourist numbers. Below are the numbers to rely on when planning.

Batumi climate: subtropics and high humidity

Batumi lies on the southeastern Black Sea coast, at the foot of the Adjara mountains. The mountains trap moist air from the sea, so rainfall is heavy all year round. The long-term normals show a mild winter and a warm but rainy summer. This is a humid subtropical climate, not Mediterranean dryness.

According to these normals, daytime air temperatures range from 11 °C in January to 28 °C in July and August. Summer nights are warm, around 18-19 °C. Frost is rare in winter: the average January low is 1 °C. Sunshine is limited: 3-4 hours a day in winter and 7-8 hours in summer.

Pay attention to the precipitation row: even in the "dry" month of May, 84 l/m² falls, and in September a full 315 l/m². That is several times more than at resorts in Spain or Greece. But the rain here is different in character. Most often it is a short downpour or thunderstorm lasting a couple of hours, not gray drizzle all day. So you will have plenty of time for both the beach and a walk between clouds.

Sea temperature and beach season

The sea near Batumi warms up more slowly than the air. In May the water stays around 16 °C, which is still cool for most people. Comfortable swimming starts in the second half of June, when the temperature reaches 22 °C. The peak comes in July and August, at 25-27 °C, according to travel-batumi.com (09/2026).

September deserves a special mention. The sea still holds around 26 °C, while the tourist flow subsides. This is the velvet season: warm water, a lively city, and fewer lines. The catch is one, but a big one: September is also the rainiest month of the year. Keep an umbrella handy and plan your days flexibly.

Batumi beaches are pebbly, and the water gets deep quickly on entry. Bring comfortable footwear for pebbles, especially if you are traveling with children.

Month by month: beach, city, or saving money

There is no universal "best month" in Batumi: everything depends on the purpose of your trip. Here is a breakdown by goal to make your choice easier.

For the beach and swimming: July and August. Sea at 25-27 °C, air up to 28 °C, long daylight hours. The catch: this is the most humid and crowded period, with possible heavy downpours and mugginess.

For a balance of warmth and comfort: the second half of June and the first half of September. The sea is already or still warm, the heat is milder, and there are noticeably fewer tourists. Many travelers call these two half-months the best time to visit.

For the city and sightseeing without heat: May and October. Daytime temperatures of 17-22 °C make it pleasant to walk through the old town, the botanical garden, and up into the Adjara mountains. Swimming at this time is for the hardy, as the water is cool.

For saving money: November through March. Accommodation prices are lower and the city is calm, but the sea is cold and rain is frequent. From December to March daytime temperatures are around 11-14 °C, and in November around 17 °C. Snow by the sea is rare. Choose this period if you are coming for quiet and low prices, not for a tan.

Rain, temperature records, and humidity

Weather records show what the local climate is capable of at its extremes. By absolute records, summer air has reached 40 °C, while winter has dropped to 8 degrees below zero. The averages are far milder, but sharp heat waves and cold snaps do happen here.

Humidity is high here all year round, peaking in August, as seen in the climate table above. You will feel it immediately in the heat. Warm, humid sea air is harder to bear than the same temperature in dry inland heat. Drink more water and plan active walks for the morning, before the sun has heated up the promenade.

There are many rainy days in any season, from 12 to 15 per month, but the downpour itself is usually short. Bring a light raincoat or compact umbrella: you will need it in both July and January. Ultraviolet levels are high in summer, the sun is subtropical, and you can get sunburned even on a cloudy day. Apply sunscreen with SPF 30 or higher from May through September and do not forget about children.

Sunrise, sunset, and daylight length

Daylight length changes noticeably with the seasons. In summer the sun rises early and sets late, leaving enough time for both the beach and the evening promenade. In winter the day is short, about 9 hours.

© 23artashes · CC BY-SAPhoto: 23artashes, CC BY-SA (https://creativecommons.org/licenses/by-sa/4.0), Wikimedia Commons

In early September the sun rises in Batumi around 06:45. The morning is cool and bright, a good time for a walk before the clouds gather and the heat sets in.

Daylight at this time lasts almost 13 hours, more precisely 12 hours 53 minutes. That is enough for both a full day by the sea and an evening in the city.

The sun sets in early September around 19:38. Sunsets over the sea in Batumi are long and soft. Save the evening for the Batumi promenade: it is the best free spot to see the sun off, and you will see it for yourself.

⁉️🤔 Frequently asked questions

When is the warmest sea in Batumi?

The peak comes in July and August: the water warms to 25-27 °C (according to travel-batumi.com, 09/2026). In September the sea still holds around 26 °C. In May the water is around 16 °C and feels cool to many.

Which month has the least rain in Batumi?

The driest month is May, around 84 l/m² by long-term normals. For the subtropics, that is not much. After that, precipitation increases, peaking in September with its 315 l/m². There is no completely rain-free month here: rainy days range from 12 to 15 in any season. But downpours are usually short.

Is it worth going to Batumi in September?

Yes, if rain does not scare you. September is the velvet season: the sea is around 26 °C, the air up to 25 °C, and there are fewer tourists than in summer. The main catch: it is the rainiest month of the year. Swimming and walking are still quite comfortable.

Can you swim in Batumi in May?

In early May the water is around 16 °C, which is cool for most people. By the end of the month the air warms to summer values, but the sea lags behind. The full swimming season starts in the second half of June. May is good for the city, the botanical garden, and the mountains, not for long swims in the sea.

What is the weather like in Batumi in winter?

Winter is mild: around 11 °C during the day, frost is rare. But it is the wettest season, with frequent rain and overcast skies. The sea cools to 10-12 °C, so swimming is no longer possible. The plus side of winter is low prices and a calm city. Snow by the sea is rare and melts quickly.

In short: when to plan your trip

Batumi is a resort with a warm sea and abundant rain, so the month matters a lot. For swimming, choose July and August; for a balance of warmth and calm, June or September; for the city without heat, May and October. Winter suits those coming for quiet and low prices, not for the beach.

• If you want the beach: July-August, sea at 25-27 °C.
• If you want warmth without crowds: the second half of June or the first half of September.
• If you are coming for the city and mountains: May or October.
• If saving money matters: November-March, but with an umbrella and no swimming.