As the mercury rises around town, the social calendar in Boston heats up as well with more and more outdoor events. The first week of the month is marked by a ton of Kentucky Derby parties and the last weekend of the month brings us bigger, re-booted edition of Boston Calling, which has quickly risen to national prominence. Let’s go.

Harpoon Alumni Tap Takeover

May 1 – 5 p.m. – City Tap House – Finally, an alumni social that doesn’t involve standing in the corner staring at your iPhone. Ten former Harpoon Brewery brewers are taking over the taps at City Tap and showcasing some of their tastiest wares. Included in the event are beers from Dorchester Brewing Company, Castle Island Brewing Co., Mystic Brewery, and Barrel House Z.

BostInno de Mayo

May 3 – 6 p.m. – Tia’s on the Waterfront — Like we weren’t going to lead with this. Raise a margarita (or three) with the BostInno crew Wednesday night at one of the best networking parties of the year. $25-$30.

Boston Calling Block Parties

May 4 – 5 p.m. – Dewey Square Park – Starting May 4 and continuing throughout the summer, the Boston Calling Block Parties on the Rose Kennedy Greenway have quickly become an after-work staple for Downtown and Seaport workers. Thursday is kind of the start of the weekend, if you think about it. Free.

Cinco De Mayo Celebration

May 5 – 3 p.m. – The Lawn on D – It’s a great week to live in Boston and enjoy drinking outdoors. The Lawn on D opens its 2017 season with a Cinco De Mayo Celebration that will feature ice cold beer and wine, food samples and margaritas from Temezcal, and live music from Rumba Flamenca. Free.

ICA First Fridays

May 5 – 5 p.m. – The Institute of Contemporary Art – Comedy night returns to the ICA with three sets from Improv Asylum. After the comedy, take in some contemporary art, grab a whimsical cocktail, and dance to the tunes of DJ Bobby BanGers. Free for members / $15 for non-members.

Great Boston Beer Marathon

May 6 – 11 a.m. –  82 Lansdowne St. – The 11th Annual Boston Beer Marathon and its hundreds of “runners” will visit 26 bars – get it? – over the course of one day. Proceeds benefit the National MS Society. $30.

The 4th Annual Kentucky Derby Party

May 6 – 4 p.m. – Boston Chops – There are a ton of Kentucky Derby events around Boston on Saturday, but Boston Chops’ party for the Race for the Roses features one of the best dressed crowds in town. The Makers Mark mint juleps and G.H. Mumm champagne doesn’t hurt either. $30.

Boston Gay Men’s Chorus Encore Annual Gala

May 6 – 6 p.m. – Royale Nightclub – BGMC’s signature night is no boring fundraiser – it’s a party featuring a VIP buffet dinner, a live auction, and an appearance by Bob the Drag Queen, Season 8 winner of “Ru Paul’s Drag Race.” $100.

Boston Lamb Jam

May 7 – 3 p.m. – Royal Sonesta Cambridge – The area’s preeminent celebration of all things Lamb brings together six of Boston’s top BBQ chefs to compete for the title of Lamb Jam Pitmaster. Local breweries and winemakers will be on hand to offer perfect pairings. $75.

30th Annual Beyond Shelter Event

May 10 – 7 p.m. – House of Blues Boston – Sample fare from 20 Boston area restaurants, dance to the Berklee College Bob Marley Ensemble, play some games, win fun silent and live auction items, all while helping end homelessness. $75.

Mother’s Day Truffle Making Workshop w/ Taza Chocolate

May 13 – 12 p.m. – The KITCHEN at the Boston Public Market – Your mother has enough flowers. Instead, celebrate Mother’s Day by making decadent chocolate truffles with Taza Chocolate and dear old mom. The first session is a family-friendly class, and the second session will also feature local wines from the Massachusetts Wine Shop. $30 / $60.

Eighth Annual Boston Bacon and Beer Festival

May 13 – 12:30 p.m. – Fenway Park – Does this really need selling? Drink beer and eat bacon from participating restaurants including Blue Ribbon BBQ, Brewer’s Fork, City Tap House, and Puritan & Co. Participating breweries include beers currently sold at Fenway, plus about 15 special breweries invited in just for the day. $52.

Boston Beer Summit

May 13 – The Castle – Celebrate – and drink! – some of best beers in the world. More than 25 breweries will be on hand along with BT’s Smokehouse from Sturbridge, Mass. Choose between two sessions: May 13 12:30 – 4 p.m. and 5:30 – 9 p.m. $59.50

Opus Affair 9th Birthday Party

May 15 – 6 p.m. – Basho Japanese Brasserie – Opus Affair, a mix of artists and art appreciators who get together each month to chat about the arts scene, is celebrating its 9th birthday at Basho. Whether you’re looking to network or meet new people, Opus events are a guaranteed good time. Free.

Jaju Pierogi Pop Up

May 18 – 6 p.m. –  Bone Up Brewing Co. – Jaju Pierogi is back for Round III in Bone Up’s taproom. The pierogi purveyors will be slinging their griddled deliciousness – kielbasa and red pepper, potato and cheese, cabbage, and more. Pierogi take-home packages will be available for purchase as well. Plus, Bone Up is worth the trip to Everett. Free.

Haymakers for Hope

May 18 – 8:30 p.m. – House of Blues – Come watch our community fight for a cure (literally) through a charity boxing match. This fight to #KOcancer feature one of our own: GM, Kyle Gross. Inspired? Donate here. Want to watch? Tickets range from $85 (GA) to $600 (Ringside).

The 2nd Annual Bent Water Blast Off – Launch into Summer

May 20 – 3 p.m. – Bent Water Brewing Company – The fine folks at Bent Water are closing out the American Craft Beer Week by releasing five brand new beers, including the return of their Blast Off White IPA. Free.

Heal Our Heroes Cruise

May 20 – 6 p.m. – Spirit of Boston –Celebrate Armed Forces Day on the Spirit of Boston! The cruise will feature live music, gourmet food, a premium open bar, and several special guest appearances who will spend a few moments discussing the issues veterans face regarding mental health and adjusting to their non-military lives. Funds raised from the evening will go towards the Home Base Program. $125

Facing Cancer Together 10k/5k Run/Bike/Walk Spring Fundraiser

May 20 – 10 a.m. – Google Cambridge – Facing Cancer Together’s second annual 10K/5K Run/Bike/Walk will include tai chi/qi gong and yoga stretches before the race and healthy food, and live music from Mad Rockit after the race ends. $10.

Boston Calling

May 26 to 28 – Harvard Athletic Complex – Boston’s premier music and arts festival is doubling in size and making a big move from City Hall Plaza to Allston. Tool, Mumford and Sons, Chance the Rapper, Bon Iver, and Solange are among the headliners.

Yoga at Trillium Brewing Company

May 28 –  10:15 a.m. – Trillium Brewing in Canton, Mass. – Giovanni Tropeano of Taproom Yoga will hold a 60-minute Vinyasa Flow yoga class (all levels) at the Trillium Taproom! After class, the taproom will be open to enjoy your beer of choice and chat with other like-minded yoga and beer enthusiasts. Don’t forget your growler. $25.